74HC42 Philips, 74HC42 Datasheet - Page 4

• Manufacturer Part Number: 74HC42
• Description: BCD to decimal decoder 1-of-10
• Manufacturer: Philips

Philips Semiconductors
December 1990
BCD to decimal decoder (1-of-10)
Fig.4 Functional diagram.
FUNCTION TABLE
Note
1. H = HIGH voltage level
A
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
3
L = LOW voltage level
A
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
INPUTS
2
Fig.5 Logic diagram.
A
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
1
A
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
4
0
Y
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
0
Y
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
1
Y
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
2
Y
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
3
OUTPUTS
Y
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
4
Y
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
5
74HC/HCT42
Y
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
Product specification
6
Y
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
7
Y
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
8
Y
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
9