74HC20 Philips, 74HC20 Datasheet - Page 4

• Manufacturer Part Number: 74HC20
• Description: Dual 4-input NAND gate
• Manufacturer: Philips

Philips Semiconductors
December 1990
Dual 4-input NAND gate
Fig.6 HCT logic diagram (one gate).
Fig.4 Functional diagram.
4
FUNCTION TABLE
Notes
1. H = HIGH voltage level
nA
H
X
X
X
L
L = LOW voltage level
X = don’t care
Fig.5 HC logic diagram (one gate).
nB
X
X
X
H
L
INPUTS
nC
H
X
X
X
L
nD
X
X
X
H
L
74HC/HCT20
Product specification
OUTPUT
nY
H
H
H
H
L