HD74HC155 데이터 시트보기 (PDF) - Hitachi -> Renesas Electronics
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HD74HC155 Datasheet PDF : 9 Pages
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HD74HC155
Inputs
Select
B
A
X
X
L
L
L
H
H
L
H
H
X
X
Strobe
Data
Outputs
2G
2C
H
X
2Y0
2Y1
2Y2
2Y3
H
H
H
H
L
L
L
H
H
H
L
L
H
L
H
H
L
L
H
H
L
H
L
L
H
H
H
L
X
H
H
H
H
H
3-line-to-8-line Decoder/1-line-to-8-line Demultiplexer
Inputs
Outputs
Select
Strobe Data 0
1
2
3
4
5
6
7
C
B
A
G
X
X
XH
2Y0
2Y1
2Y2
2Y3
1Y0
1Y1
1Y2
1Y3
H
H
H
H
H
H
H
H
L
L
LL
L
H
H
H
H
H
H
H
L
L
HL
H
L
H
H
H
H
H
H
L
HLL
H
H
L
H
H
H
H
H
L
H HL
H
H
H
L
H
H
H
H
H
L
L
L
H
H
H
H
L
H
H
H
H
L
HL
H
H
H
H
H
L
H
H
H
H
L
L
H
H
H
H
H
H
L
H
H
H
H
L
H
H
H
H
H
H
H
L
Notes: 1. C: inputs 1C and 2C connected together
2. G: inputs 1G and 2G connected together
3. X: irrelevant
2
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