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MAX3468CPA-

产品描述RS-422/RS-485 Interface IC +5V, Fail-Safe, 40Mbps, PROFIBUS RS-485/RS-422 Transceivers
产品类别半导体    模拟混合信号IC   
文件大小202KB,共13页
制造商Maxim(美信半导体)
官网地址https://www.maximintegrated.com/en.html
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MAX3468CPA-概述

RS-422/RS-485 Interface IC +5V, Fail-Safe, 40Mbps, PROFIBUS RS-485/RS-422 Transceivers

MAX3468CPA-规格参数

参数名称属性值
产品种类
Product Category
RS-422/RS-485 Interface IC
制造商
Manufacturer
Maxim(美信半导体)
安装风格
Mounting Style
Through Hole
封装 / 箱体
Package / Case
PDIP N
FunctionTransceiver
数据速率
Data Rate
40 Mb/s
接收机数量
Number of Receivers
1 Receiver
工作电源电压
Operating Supply Voltage
5 V
工作电源电流
Operating Supply Current
2.5 mA
最小工作温度
Minimum Operating Temperature
0 C
最大工作温度
Maximum Operating Temperature
+ 70 C
高度
Height
4.45 mm (Max)
Input Voltage0.8 V to 2 V
长度
Length
9.91 mm (Max)
Number of Channels4 Channel
Number of Output Lines1
Output Current125 uA
Output Voltage3 V
Pd-功率耗散
Pd - Power Dissipation
471 mW
传播延迟时间
Propagation Delay Time
15 ns, 20 ns
宽度
Width
7.87 mm (Max)

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19-3038; Rev 3; 5/12
+5V, Fail-Safe, 40Mbps, Profibus RS-485/
RS-422 Transceivers
General Description
The MAX3465–MAX3469 are high-speed differential
bus transceivers for RS-485 and RS-422 communica-
tions. They are designed to meet TIA/EIA-422-B,
TIA/EIA-485-A, V.11, and X.27 standards. The trans-
ceiver complies with the Profibus specification provid-
ing +2.1V minimum output level with a 54Ω load,
40Mbps data rate, and output skew less than 2ns. Each
part contains one three-state differential line driver and
one differential input line receiver. The devices operate
from a +5V supply and feature true fail-safe circuitry,
which guarantees a logic-high receiver output when the
receiver inputs are open or shorted. This enables all
receiver outputs on a terminated bus to output logic
highs when all transmitters are disabled.
All devices feature a 1/4-standard-unit load receiver
input impedance that allows 128 transceivers on the
bus. Driver and receiver propagation delays are guar-
anteed under 20ns for multidrop, clock distribution
applications. Drivers are short-circuit current limited
and are protected against excessive power dissipation
by thermal-shutdown circuitry. The driver and receiver
feature active-high and active-low enables, respective-
ly, that can be connected together externally to serve
as a direction control.
Up to 40Mbps Data Rate
15ns Transmitter Propagation Delay
20ns Receiver Propagation Delay
2ns Transmitter and Receiver Skew
High Differential Driver Output Level (2.1V on 54Ω)
Hot-Swap Versions
1µA Shutdown Supply Current
Low Supply Current Requirements (2.5mA, typ)
Allow Up to 128 Transceivers on the Bus
True Fail-Safe Receiver while Maintaining EIA/TIA-
485 Compatibility
Designed for Multipoint Transmissions on Long
or Noisy Bus Lines
Full-Duplex and Half-Duplex Versions Available
Phase Controls to Correct for Twisted-Pair
Reversal for 14-Pin Versions
Current-Limiting and Thermal Shutdown for
Driver Overload Protection
Features
Recommended for Profibus Applications
MAX3465–MAX3469
Ordering Information
Applications
High-Speed RS-485 Communications
High-Speed RS-422 Communications
Level Translators
Industrial-Control Local Area Networks
Profibus Applications
PART
MAX3465CSD
MAX3465CPD
MAX3465ESD
MAX3465EPD
TEMP RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
14 SO
14 Plastic DIP
14 SO
14 Plastic DIP
Ordering Information continued at end of data sheet.
Devices are also available in a lead(Pb)-free/RoHS-compliant
package. Specify lead-free by adding “+” to the part number
when ordering.
Pin Configurations appear at end of data sheet.
Selector Guide
PART
NUMBER
MAX3465
MAX3466
MAX3467
MAX3468
MAX3469
HALF/FULL
DUPLEX
Full
Full
Full
Half
Half
RECEIVER/
DRIVER
ENABLE
Yes
Yes
No
Yes
Yes
LOW-
POWER
SHUTDOWN
Yes
Yes
No
Yes
Yes
HOT SWAP
Yes
No
No
Yes
No
RECEIVER/
DRIVER PHASE
SELECT
Yes
Yes
No
No
No
INDEPENDENT
SHDN PIN
Yes
Yes
No
No
No
PIN COUNT
14
14
8
8
8
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1

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