IN74HC240A
O
CTAL
3-S
TATE
I
NVERTING
B
UFFER
/L
INE
D
RIVER
/L
INE
R
ECEIVER
High-Performance Silicon-Gate CMOS
The IN74HC240A 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
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•
•
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ORDERING INFORMATION
IN74HC240AN Plastic
IN74HC240ADW SOIC
T
A
= -55° to 125° C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
PIN 20=V
CC
PIN 10 = GND
Inputs
Enable A,
A,B
Enable B
L
L
L
H
H
X
Outputs
YA,YB
H
L
Z
X
=
don’t
Z = high impedance
care
1
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