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SN74LS297NE4

器件型号:SN74LS297NE4
器件类别:热门应用    无线/射频/通信   
厂商名称:Texas Instruments
厂商官网:http://www.ti.com/
标准:
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器件描述

Phase Locked Loops - PLL Digital Phase Locked-Loop Filters

参数
产品属性属性值
Product AttributeAttribute Value
制造商:
Manufacturer:
Texas Instruments
产品种类:
Product Category:
Phase Locked Loops - PLL
RoHS:YES
类型:
Type:
PLL
Number of Circuits:1
电源电压-最大:
Supply Voltage - Max:
5.25 V
电源电压-最小:
Supply Voltage - Min:
4.75 V
最小工作温度:
Minimum Operating Temperature:
0 C
最大工作温度:
Maximum Operating Temperature:
+ 70 C
安装风格:
Mounting Style:
Through Hole
封装 / 箱体:
Package / Case:
PDIP-16
封装:
Packaging:
Tube
高度:
Height:
4.57 mm
长度:
Length:
19.3 mm
系列:
Series:
SN74LS297
宽度:
Width:
6.35 mm
商标:
Brand:
Texas Instruments
Output Level:TTL
工作电源电压:
Operating Supply Voltage:
4.75 V to 5.25 V
产品类型:
Product Type:
PLLs - Phase Locked Loops
工厂包装数量:
Factory Pack Quantity:
25
子类别:
Subcategory:
Wireless & RF Integrated Circuits
单位重量:
Unit Weight:
0.033711 oz

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SN74LS297NE4器件文档内容

                    SN54LS297, SN74LS297
DIGITAL PHASE-LOCKED-LOOP FILTERS

                       SDLS155 JANUARY 1981 REVISED MARCH 1988

PRODUCTION DATA information is current as of publication date.                                    Copyright 1988, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments                                                                                      1
standard warranty. Production processing does not necessarily include
testing of all parameters.

                                                    POST OFFICE BOX 655303 DALLAS, TEXAS 75265
SN54LS297, SN74LS297
DIGITAL PHASE-LOCKED-LOOP FILTERS

SDLS155 JANUARY 1981 REVISED MARCH 1988

2   POST OFFICE BOX 655303 DALLAS, TEXAS 75265
                    SN54LS297, SN74LS297
DIGITAL PHASE-LOCKED-LOOP FILTERS

                       SDLS155 JANUARY 1981 REVISED MARCH 1988

POST OFFICE BOX 655303 DALLAS, TEXAS 75265  3
SN54LS297, SN74LS297
DIGITAL PHASE-LOCKED-LOOP FILTERS

SDLS155 JANUARY 1981 REVISED MARCH 1988

4   POST OFFICE BOX 655303 DALLAS, TEXAS 75265
                    SN54LS297, SN74LS297
DIGITAL PHASE-LOCKED-LOOP FILTERS

                       SDLS155 JANUARY 1981 REVISED MARCH 1988

POST OFFICE BOX 655303 DALLAS, TEXAS 75265  5
SN54LS297, SN74LS297
DIGITAL PHASE-LOCKED-LOOP FILTERS

SDLS155 JANUARY 1981 REVISED MARCH 1988

6   POST OFFICE BOX 655303 DALLAS, TEXAS 75265
                                                       IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily
performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should
provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business
practice. TI is not responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its
representatives against any damages arising out of the use of TI products in such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in
connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products          amplifier.ti.com        Applications        www.ti.com/audio
Amplifiers        dataconverter.ti.com    Audio               www.ti.com/automotive
Data Converters   dsp.ti.com              Automotive          www.ti.com/broadband
DSP               interface.ti.com        Broadband           www.ti.com/digitalcontrol
Interface         logic.ti.com            Digital Control     www.ti.com/military
Logic             power.ti.com            Military            www.ti.com/opticalnetwork
Power Mgmt        microcontroller.ti.com  Optical Networking  www.ti.com/security
Microcontrollers  www.ti.com/lpw          Security            www.ti.com/telephony
Low Power                                 Telephony
Wireless                                                      www.ti.com/video
                                          Video & Imaging     www.ti.com/wireless
                                          Wireless

                  Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
                                       Copyright 2007, Texas Instruments Incorporated
                                                       IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily
performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should
provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business
practice. TI is not responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its
representatives against any damages arising out of the use of TI products in such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in
connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products          amplifier.ti.com        Applications        www.ti.com/audio
Amplifiers        dataconverter.ti.com    Audio               www.ti.com/automotive
Data Converters   dsp.ti.com              Automotive          www.ti.com/broadband
DSP               interface.ti.com        Broadband           www.ti.com/digitalcontrol
Interface         logic.ti.com            Digital Control     www.ti.com/military
Logic             power.ti.com            Military            www.ti.com/opticalnetwork
Power Mgmt        microcontroller.ti.com  Optical Networking  www.ti.com/security
Microcontrollers  www.ti.com/lpw          Security            www.ti.com/telephony
Low Power                                 Telephony
Wireless                                                      www.ti.com/video
                                          Video & Imaging     www.ti.com/wireless
                                          Wireless

                  Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
                                       Copyright 2007, Texas Instruments Incorporated
                                                       IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily
performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should
provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business
practice. TI is not responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its
representatives against any damages arising out of the use of TI products in such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in
connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products          amplifier.ti.com        Applications        www.ti.com/audio
Amplifiers        dataconverter.ti.com    Audio               www.ti.com/automotive
Data Converters   dsp.ti.com              Automotive          www.ti.com/broadband
DSP               interface.ti.com        Broadband           www.ti.com/digitalcontrol
Interface         logic.ti.com            Digital Control     www.ti.com/military
Logic             power.ti.com            Military            www.ti.com/opticalnetwork
Power Mgmt        microcontroller.ti.com  Optical Networking  www.ti.com/security
Microcontrollers  www.ti.com/lpw          Security            www.ti.com/telephony
Low Power                                 Telephony
Wireless                                                      www.ti.com/video
                                          Video & Imaging     www.ti.com/wireless
                                          Wireless

                  Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
                                       Copyright 2007, Texas Instruments Incorporated
                                                       IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily
performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should
provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business
practice. TI is not responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its
representatives against any damages arising out of the use of TI products in such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in
connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products          amplifier.ti.com        Applications        www.ti.com/audio
Amplifiers        dataconverter.ti.com    Audio               www.ti.com/automotive
Data Converters   dsp.ti.com              Automotive          www.ti.com/broadband
DSP               interface.ti.com        Broadband           www.ti.com/digitalcontrol
Interface         logic.ti.com            Digital Control     www.ti.com/military
Logic             power.ti.com            Military            www.ti.com/opticalnetwork
Power Mgmt        microcontroller.ti.com  Optical Networking  www.ti.com/security
Microcontrollers  www.ti.com/lpw          Security            www.ti.com/telephony
Low Power                                 Telephony
Wireless                                                      www.ti.com/video
                                          Video & Imaging     www.ti.com/wireless
                                          Wireless

                  Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
                                       Copyright 2007, Texas Instruments Incorporated
                                                       IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily
performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should
provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business
practice. TI is not responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its
representatives against any damages arising out of the use of TI products in such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in
connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products          amplifier.ti.com        Applications        www.ti.com/audio
Amplifiers        dataconverter.ti.com    Audio               www.ti.com/automotive
Data Converters   dsp.ti.com              Automotive          www.ti.com/broadband
DSP               interface.ti.com        Broadband           www.ti.com/digitalcontrol
Interface         logic.ti.com            Digital Control     www.ti.com/military
Logic             power.ti.com            Military            www.ti.com/opticalnetwork
Power Mgmt        microcontroller.ti.com  Optical Networking  www.ti.com/security
Microcontrollers  www.ti.com/lpw          Security            www.ti.com/telephony
Low Power                                 Telephony
Wireless                                                      www.ti.com/video
                                          Video & Imaging     www.ti.com/wireless
                                          Wireless

                  Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
                                       Copyright 2007, Texas Instruments Incorporated
                                                       IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily
performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should
provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business
practice. TI is not responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its
representatives against any damages arising out of the use of TI products in such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in
connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products          amplifier.ti.com        Applications        www.ti.com/audio
Amplifiers        dataconverter.ti.com    Audio               www.ti.com/automotive
Data Converters   dsp.ti.com              Automotive          www.ti.com/broadband
DSP               interface.ti.com        Broadband           www.ti.com/digitalcontrol
Interface         logic.ti.com            Digital Control     www.ti.com/military
Logic             power.ti.com            Military            www.ti.com/opticalnetwork
Power Mgmt        microcontroller.ti.com  Optical Networking  www.ti.com/security
Microcontrollers  www.ti.com/lpw          Security            www.ti.com/telephony
Low Power                                 Telephony
Wireless                                                      www.ti.com/video
                                          Video & Imaging     www.ti.com/wireless
                                          Wireless

                  Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
                                       Copyright 2007, Texas Instruments Incorporated
www.ti.com                                                 PACKAGE OPTION ADDENDUM

                                                                                                                          12-Jan-2006

PACKAGING INFORMATION

Orderable Device  Status (1)  Package  Package  Pins Package Eco Plan (2)  Lead/Ball Finish MSL Peak Temp (3)
   SN74LS297N     ACTIVE        Type   Drawing             Qty                CU NIPDAU N / A for Pkg Type
                  ACTIVE                                                      CU NIPDAU N / A for Pkg Type
SN74LS297NE4     ACTIVE        PDIP        N   16 25      Pb-Free            CU NIPDAU N / A for Pkg Type
SN74LS297NE4                                              (RoHS)

                              PDIP     N        16 25      Pb-Free
                                                           (RoHS)

                              PDIP     N        16 25      Pb-Free
                                                           (RoHS)

(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.

(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.

                                          Addendum-Page 1
                                                       IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily
performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should
provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Information of third parties
may be subject to additional restrictions.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business
practice. TI is not responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its
representatives against any damages arising out of the use of TI products in such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in
connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products          amplifier.ti.com        Applications        www.ti.com/audio
Amplifiers        dataconverter.ti.com    Audio               www.ti.com/automotive
Data Converters   dsp.ti.com              Automotive          www.ti.com/broadband
DSP               interface.ti.com        Broadband           www.ti.com/digitalcontrol
Interface         logic.ti.com            Digital Control     www.ti.com/military
Logic             power.ti.com            Military            www.ti.com/opticalnetwork
Power Mgmt        microcontroller.ti.com  Optical Networking  www.ti.com/security
Microcontrollers  www.ti-rfid.com         Security            www.ti.com/telephony
RFID              www.ti.com/lpw          Telephony           www.ti.com/video
Low Power                                 Video & Imaging
Wireless                                                      www.ti.com/wireless
                                          Wireless

                  Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
                                       Copyright 2007, Texas Instruments Incorporated
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