TECHNICAL DATA
IN74HC20A
Dual 4-Input NAND Gate
High-Performance Silicon-Gate CMOS
The IN74HC20A 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.
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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
IN74HC20AN Plastic
IN74HC20AD SOIC
TA = -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
NC = NO CONNECTION
PIN 14 =VCC
PIN 7 = GND
PINS 3,11 = NO CONNECTION
FUNCTION TABLE
Inputs
Output
A
L
B
X
L
C
X
X
L
D
X
X
X
L
Y
H
H
H
H
L
X
X
X
H
X
X
H
X
H
H
X = don’t care
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
