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器件描述：OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
器件厂商：TI [Texas Instruments]
厂商主页：http://www.ti.com/
文件大小：84.72KB
文件页数：6
PDF阅读：54HCT240.pdf (点击阅读器件资料)
摘要：
SN54HCT240, SN74HCT240
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SCLS174C – MARCH 1984 – REVISED FEBRUARY 2000
1POST OFFICE BOX 655303 ? DALLAS, TEXAS 75265
C0068 Inputs Are TTL-Voltage Compatible
C0068 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
C0068 High-Current Outputs Drive up to 15 LSTTL
Loads
C0068 Package Options Include Plastic
Small-Outline (DW), Thin Shrink
Small-Outline (PW), and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J) DIPs
description
These octal buffers and line drivers are designed
specifically to improve both the performance and
density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and
transmitters. The ’HCT240 devices are organized
as two 4-bit buffers/drivers with separate
output-enable (OE) inputs. When OE is low, the
device passes inverted data from the A inputs to
the Y outputs. When OE is high, the outputs are
in the high-impedance state.
The SN54HCT240 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74HCT240 is characterized for
operation from –40°C to 85°C.
FUNCTION TABLE
(each buffer/driver)
INPUTS
OUTPUT
OE A
Y
L H L
L LH
H X Z
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
SN54HCT240 ...J OR W PACKAGE
SN74HCT240 ...DW, N, OR PW PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
SN54HCT240 . . . FK PACKAGE
(TOP VIEW)
2Y4 1A1 1OE
1Y4 2A2
2OE
2Y1
GND
2A1
V
CC
Copyright ? 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
相关器件：SN54HCT240FK SN54HCT240 SN54HCT240W SN54HCT240J SN74HCT240 SN74HCT240DW SN74HCT240N SN74HCT240PW 74HCT240
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