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IN74AC157D

Quad 2-Input Data Selector/Multiplexer High-Speed Silicon-Gate CMOS

Integral Corp. 

TECHNICAL DATA

Quad 2-Input Data Selector/Multiplexer

High-Speed Silicon-Gate CMOS

IN74AC157

The IN74AC157 is identical in pinout to the LS/ALS157,

HC/HCT157. The device inputs are compatible with standard CMOS

outputs; with pullup resistors, they are compatible with LS/ALS

outputs.

This device routes 2 nibbles (A or B) to a single port (Y) as

determined by the Select input. The data is presented at the outputs in

noninvertered form. A high level on the Output Enable input sets all

four Y outputs to a low level.

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 µA; 0.1µA @ 25°C

• High Noise Immunity Characteristic of CMOS Devices

• Outputs Source/Sink 24 mA

ORDERING INFORMATION

IN74AC157N Plastic

IN74AC157D SOIC

TA = -40° to 85° C for all

packages

LOGIC DIAGRAM

PIN ASSIGNMENT

PIN 16 =VCC

PIN 8 = GND

FUNCTION TABLE

Inputs

Outputs

Output

Enable

Select Y0-Y3

H

X

L

L

L

A0-A3

L

H

B0-B3

X=don’t care

A0-A3,B0-B3=the levels of the respective

Data-Word Inputs

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