IN74HC20
DUAL 4-INPUT NAND GATE
High-Performance Silicon-Gate CMOS
The IN74HC20 is identical in pinout to the LS/ALS20. The
device inputs are compatible with standard CMOS outputs; with
pullup resistors, they are compatible with LS/ALSTTL outputs.
• 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
IN74HC20N Plastic
IN74HC20D SOIC
TA = -55° to 125° C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
NC = NO CONNECTION
PIN 14 =VCC
PIN 7 = GND
FUNCTION TABLE
PINS 3,11 = NO CONNECTION
Inputs
Output
A
L
X
X
X
H
B
X
L
X
X
H
C
X
X
L
X
H
D
X
X
X
L
Y
H
H
H
H
L
H
X = don’t care
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