IN74HC240A
TECHNICAL DATA
Octal 3-State Inverting Buffer/Line Driver/Line Receiver
High-Performance Silicon-Gate CMOS
The IN74HC240A is identical in pinout to the LS/ALS240. The device inputs are patible with standard CMOS outputs; with pullup resistors, they are patible 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 busoriented 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 IN74HC240AN Plastic IN74HC240ADW SOIC TA = -55° to 125° C for all packages
PIN ASSIGNMENT LOGIC DIAGRAM
FUNCTION TABLE
Inputs Outputs A,B L H X YA,YB H L Z w w w
.d h s a t a ee
. u t4 m o c
Enable A, Enable B L L H
PIN 20=VCC PIN 10 = GND
X = don’t care Z = high...
