74LS156 查看數據表（PDF） - Renesas Electronics
零件编号
产品描述 (功能)
生产厂家
74LS156
Renesas Electronics
74LS156 Datasheet PDF : 7 Pages
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HD74LS156
Function Table
• 2-to-4-line Decoder / 1-to-4-line Demultiplexer
Inputs
Outputs
Select
Strobe
Data
B
A
1G
1C
1Y0
1Y1
1Y2
1Y3
X
X
H
X
H
H
H
H
L
L
L
H
L
H
H
H
L
H
L
H
H
L
H
H
H
L
L
H
H
H
L
H
H
H
L
H
H
H
H
L
X
X
X
L
H
H
H
H
Inputs
Outputs
Select
Strobe
Data
B
A
2G
2C
2Y0
2Y1
2Y2
2Y3
X
X
H
X
H
H
H
H
L
L
L
L
L
H
H
H
L
H
L
L
H
L
H
H
H
L
L
L
H
H
L
H
H
H
L
L
H
H
H
L
X
X
X
H
H
H
H
H
• 3-to-8-line Decoder / 1-to-8-line Demultiplexer
Inputs
Outputs
Select
C*1
B
A
Strobe or
Data
(0)
(1)
(2)
(3)
(4)
G*2
2Y0
2Y1
2Y2
2Y3
1Y0
(5)
(6)
(7)
1Y1
1Y2
1Y3
X
X
X
H
H
H
H
H
H
H
H
H
L
L
L
L
L
H
H
H
H
H
H
H
L
L
H
L
H
L
H
H
H
H
H
H
L
H
L
L
H
H
L
H
H
H
H
H
L
H
H
L
H
H
H
L
H
H
H
H
H
L
L
L
H
H
H
H
L
H
H
H
H
L
H
L
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; input 1C and 2C connected together
2. G; inputs 1G and 2G connected together
3. H; high level, L; low level, X; irrelevant
Rev.3.00, Jul.13.2005, page 2 of 6
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