IN74AC20
D
UAL
4-I
NPUT
NAND G
ATE
High-Speed Silicon-Gate CMOS
The IN74AC20 is identical in pinout to the LS/ALS20,
HC/HCT20. The device inputs are compatible with
standard CMOS outputs; with pullup resistors, they are
compatible with LS/ALS outputs.
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0
µA;
0.1
µA
@ 25°C
High Noise Immunity Characteristic of CMOS Devices
Outputs Source/Sink 24 mA
ORDERING INFORMATION
IN74AC20N Plastic
IN74AC20D SOIC
T
A
= -40° to 85° C for all
packages
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•
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LOGIC DIAGRAM
PIN ASSIGNMENT
NC = NO CONNECTION
PIN 14 =V
CC
PIN 7 = GND
PINS 3,11 = NO CONNECTION
FUNCTION TABLE
Inputs
Outpu
t
A
B
C
D
Y
L
X
X
X
H
X
L
X
X
H
X
X
L
X
H
X
X
X
L
H
H
H
H
H
L
X = don’t care
1
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