TECHNICAL DATA

IN74HC244A

Octal 3-State Noninverting

Buffer/Line Driver/Line Receiver

High-Performance Silicon-Gate CMOS

ORDERING INFORMATION

IN74HC244AN Plastic

IN74HC244ADW SOIC

The IN74HC244A is identical in pinout to the LS/ALS244. The

device inputs are compatible with standard CMOS outputs; with pullup

resistors, they are compatible with LS/ALSTTL outputs.

This octal noninverting buffer/line driver/line receiver is designed to

be used with 3-state memory address drivers, clock drivers, and other

bus-oriented systems. The device has noninverting outputs and two

active-low output enables.

• 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

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 10 = GND

FUNCTION TABLE

Inputs

Outputs

Enable A,

Enable B

A,B

YA,YB

L

L

L

L

H

H

H

X

Z

X=don’t care

Z = high impedance

Rev. 00