TECHNICAL DATA
IN74HCT21A
Dual 4-Input AND Gate
The IN74HCT21A is high-speed Si-gate CMOS device and is pin
compatible with low power Schottky TTL (LSTTL) . The device provide
the Dual 4-input AND function.
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Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1.0 mA
High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
IN74HCT21AN
IN74HCT21AD
IZ74HCT21A
Plastic
SOIC
Chip
TA = -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
A1
V
A1
B1
1
2
3
4
5
6
7
14
CC
B1
C1
13 D2
Y1
C2
12
11
10
9
C1
D1
B2
A2
Y1
A2
B2
Y2
GND
8
Y2
C2
D2
FUNCTION TABLE
Inputs
Output
A
B
Ñ
D
Y
L
X
X
X
X
L
X
X
L
X
X
X
L
L
L
L
L
PIN 14 =VCC
PIN 7 = GND
X
X
X
H
H
H
H
H
X = don’t care
INTEGRAL
1
INTEGRAL [ INTEGRAL CORP. ]
