IN74HC20
D
UAL
4-I
NPUT
NAND G
ATE
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
T
A
= -55° to 125° C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
NC = NO CONNECTION
PIN 14 =V
CC
PIN 7 = GND
PINS 3,11 = NO CONNECTION
A
L
X
X
X
H
FUNCTION TABLE
Inputs
B
C
X
X
L
X
X
L
X
X
H
H
D
X
X
X
L
H
Output
Y
H
H
H
H
L
X = don’t care
1
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