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SL74HC240D

Octal 3-State Inverting Buffer/Line Driver/Line Receiver High-Performance Silicon-Gate CMOS

System Logic Semiconductor 

SL74HC240

Octal 3-State Inverting Buffer/Line

Driver/Line Receiver

High-Performance Silicon-Gate CMOS

The SL74HC240 is identical in pinout to the LS/ALS240. 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

• High Noise Immunity Characteristic of CMOS Devices

ORDERING INFORMATION

SL74HC240N Plastic

SL74HC240D SOIC

TA = -55° to 125° C for all packages

LOGIC DIAGRAM

PIN ASSIGNMENT

PIN 20=VCC

PIN 10 = GND

SLS

System Logic

Semiconductor

FUNCTION TABLE

Inputs

Enable A, A,B

Enable B

L

L

L

H

H

X

X = don’t care

Z = high impedance

Outputs

YA,YB

H

L

Z

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