IN74ACT240
OCTAL 3-STATE INVERTING BUFFER/LINE
DRIVER/LINE RECEIVER
High-Speed Silicon-Gate CMOS
The IN74ACT240 is identical in pinout to the LS/ALS240,
HC/HCT240. The IN74ACT240 may be used as a level converter
for interfacing TTL or NMOS outputs to High Speed CMOS
inputs.
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.
• TTL/NMOS Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 4.5 to 5.5 V
ORDERING INFORMATION
• Low Input Current: 1.0 µA; 0.1 µA @ 25°C
• Outputs Source/Sink 24 mA
IN74ACT240N Plastic
IN74ACT240DW SOIC
TA = -40° to 85° C for all
packages
LOGIC DIAGRAM
PIN ASSIGNMENT
FUNCTION TABLE
Inputs
Outputs
YA,YB
Enable A,
A,B
Enable B
L
L
H
X
H
L
Z
L
H
X = don’t care
PIN 20=VCC
Z = high impedance
PIN 10 = GND
1
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