74HC20N 查看數據表（PDF） - Philips Electronics
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74HC20N Datasheet PDF : 6 Pages
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Philips Semiconductors
Dual 4-input NAND gate
Product specification
74HC/HCT20
Fig.4 Functional diagram.
Fig.6 HCT logic diagram (one gate).
Fig.5 HC logic diagram (one gate).
FUNCTION TABLE
INPUTS
nA nB nC nD
L
X
X
X
X
L
X
X
X
X
L
X
X
X
X
L
H
H
H
H
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
OUTPUT
nY
H
H
H
H
L
December 1990
4
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