TECHNICAL DATA
IN74HCT20A
Dual 4-Input NAND Gate
High-Performance Silicon-Gate CMOS
The IN74HCT20A is identical in pinout to the LS/ALS20. The
IN74HCT20A may be used as a level converter for interfacing TTL or
NMOS outputs to High-Speed CMOS inputs.
•
TTL/NMOS-Compatible Input Levels
•
Outputs Directly Interface to CMOS, NMOS, and TTL
•
Operating Voltage Range: 4.5 to 5.5 V
•
Low Input Current: 1.0
µA
•
High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
IN74HCT20AN Plastic
IN74HCT20AD SOIC
T
A
= -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
NC = NO CONNECTION
PIN 14 =V
CC
PIN 7 = GND
PINS 3,11 = NO CONNECTION
FUNCTION TABLE
Inputs
A
L
X
X
X
H
B
X
L
X
X
H
C
X
X
L
X
H
D
X
X
X
L
H
Output
Y
H
H
H
H
L
X = don’t care
1
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