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SN74HCT157 Datasheet Preview

SN74HCT157 Datasheet

QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXER

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SN54HCT157, SN74HCT157
QUADRUPLE 2ĆLINE TO 1ĆLINE DATA SELECTORS/MULTIPLEXERS
D Operating Voltage Range of 4.5 V to 5.5 V
D High-Current Outputs Drive Up To 15
LSTTL Loads
D Typical tpd = 15 ns
D Low Power Consumption, 80-µA Max ICC
SN54HCT157 . . . J OR W PACKAGE
SN74HCT157 . . . D OR N PACKAGE
(TOP VIEW)
SCLS071D − NOVEMBER 1988 − REVISED OCTOBER 2003
D ±6-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D Inputs Are TTL-Voltage Compatible
D Buffered Inputs and Outputs
SN54HCT157 . . . FK PACKAGE
(TOP VIEW)
A/B 1
1A 2
1B 3
1Y 4
2A 5
2B 6
2Y 7
GND 8
16 VCC
15 G
14 4A
13 4B
12 4Y
11 3A
10 3B
9 3Y
1B
3 2 1 20 19
4
18
4A
1Y 5
17 4B
NC 6
16 NC
2A 7
15 4Y
2B 8
14 3A
9 10 11 12 13
description/ordering information
NC − No internal connection
These data selectors/multiplexers contain inverters and drivers to supply full data selection to the four output
gates. A separate strobe (G) input is provided. A 4-bit word is selected from one of two sources and is routed
to the four outputs.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube of 25
SN74HCT157N
SN74HCT157N
−40°C to 85°C
SOIC − D
Tube of 40
Reel of 2500
Reel of 250
SN74HCT157D
SN74HCT157DR
SN74HCT157DT
HCT157
CDIP − J
Tube of 25
SNJ54HCT157J
SNJ54HCT157J
−55°C to 125°C CFP − W
Tube of 150
SNJ54HCT157W
SNJ54HCT157W
LCCC − FK
Tube of 55
SNJ54HCT157FK
SNJ54HCT157FK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright 2003, Texas Instruments Incorporated
1




etcTI

SN74HCT157 Datasheet Preview

SN74HCT157 Datasheet

QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXER

No Preview Available !

SN54HCT157, SN74HCT157
QUADRUPLE 2ĆLINE TO 1ĆLINE DATA SELECTORS/MULTIPLEXERS
SCLS071D − NOVEMBER 1988 − REVISED OCTOBER 2003
STROBE
G
H
L
L
L
L
FUNCTION TABLE
INPUTS
SELECT
A/B
DATA
A
B
X
X
X
L
L
X
L
H
X
H
X
L
H
X
H
OUTPUT
Y
L
L
H
L
H
logic diagram (positive logic)
1A 2
3
1B
4 1Y
5
2A
2B 6
3A 11
10
3B
7
2Y
9 3Y
4A 14
4B 13
G 15
A/B 1
12 4Y
Pin numbers shown are for the D, J, N, and W packages.
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN74HCT157
Description QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXER
Maker etcTI
Total Page 3 Pages
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