SL74HC253

System Logic

Semiconductor

SLS

Dual 4-Input Data Selector/Multiplexer

with 3-State Otputs

High-Performance Silicon-Gate CMOS

The SL74HC253 is identical in pinout to the LS/ALS253. The device

inputs are compatible with standard CMOS outputs; with pullup

resistors, they are compatible with LS/ALSTTL outputs.

The Address Inputs select one of four Data Inputs from each

multiplexer. Each multiplexer has an active-low Output Enable control

and a three-state noninverting output.

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 µA

• High Noise Immunity Characteristic of CMOS Devices

ORDERING INFORMATION

SL74HC253N Plastic

SL74HC253D SOIC

° to 125° C for all packages

FUNCTION TABLE

Inputs

Output

A1

A0

OE

Y

X

X

H

Z

L

L

L

D0

L

H

L

D1

H

L

L

D2

H

H

L

D3

D0,D1...D3=the level of the respective

Data Input

Z = high impedance

X = don’t care

LOGIC DIAGRAM

PIN 8 = GND

PIN ASSIGNMENT