Click to expand full text
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. • 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 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
w
w
w
.d
h s a t a
ee
. u t4
m o c
X = don’t care
1
www.
IN74HC20A Datasheet
