HD74HC253 Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics
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HD74HC253
Hitachi -> Renesas Electronics
HD74HC253 Datasheet PDF : 6 Pages
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HD74HC253
Function Table
Select inputs
Data iputs
Output Control
B
A
C0
C1
C2
C3
G
X
X
X
X
X
X
H
L
L
L
X
X
X
L
L
L
H
X
X
X
L
L
H
X
L
X
X
L
L
H
X
H
X
X
L
H
L
X
X
L
X
L
H
L
X
X
H
X
L
H
H
X
X
X
L
L
H
H
X
X
X
H
L
Notes 1. X: irrelevant
2. Address inputs A and B are common to both sections.
Output
Y
Z
L
H
L
H
L
H
L
H
Pin Arrangement
Output
control
1G
1
Select B 2
3 1C3
4 1C2
5
6
Output 1Y 7
1C1
B
1C0 B
A
1Y A
GND 8
16 VCC
15
2G
Output
control
14 A Select
2C3 13
2C2 12
B
B 2C1 11
A
A 2C0 10
2Y 9 2Y Output
(Top view)
2
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