TECHNICAL DATA

302

Octal 3-State Inverting Buffer/Line

Driver/Line Receiver

High-Speed Silicon-Gate CMOS

The IN74AC240 is identical in pinout to the LS/ALS240,

HC/HCT240. The device inputs are compatible with standard CMOS

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

outputs.

This octal inverting 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 inverting 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; 0.1 µA @ 25°C

• High Noise Immunity Characteristic of CMOS Devices

• Outputs Source/Sink 24 mA

IN74AC240

ORDERING INFORMATION

IN74AC240N Plastic

IN74AC240DW SOIC

packages

FUNCTION TABLE

Inputs

Outputs

Enable A,

Enable B

A,B

YA,YB

LL

H

LH

L

HX

Z

X = don’t care

Z = high impedance

LOGIC DIAGRAM

PIN 10 = GND

PIN ASSIGNMENT