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TECHNICAL DATA
IN74HC21A
Dual 4-Input AND Gate
The IN74HC21A is high-speed Si-gate CMOS device and is pin compatible with pullup resistors with low power Schottky TTL (LSTTL). The device provide the Dual 4-input AND function. • 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 IN74HC21AN Plastic IN74HC21AD SOIC TA = -55° to 125° C for all packages
LOGIC DIAGRAM PIN ASSIGNMENT
A1 B1 Y1 C1
C1 D1 A1 B1
1 2 3 4 5 6 7
14 13 12 11 10 9 8
V CC
D2 C2
B2 A2 Y2
GND
B2 Y2 C2 D2
FUNCTION TABLE
Inputs A L
PIN 14 =VCC PIN 7 = GND
Output С X X L X H D X X X L H Y L L L L H
B X L X X H
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IN74HC21A Datasheet
