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74VHCT138A Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part No. 74VHCT138A
Description  3-to-8 Decoder/Demultiplexer
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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 2 page
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www.fairchildsemi.com
2
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
Inputs
Outputs
E1
E2
E3
A0
A1
A2
O0
O1
O2
O3
O4
O5
O6
O7
H
XXXXX
HHHHHHHH
X
H
XXXX
HHHHHHHH
X
X
L
X
X
X
HHHHHHHH
LL
H
LLLL
HHHHHHH
L
L
HH
L
L
H
L
HHHHHH
L
L
H
L
H
L
HH
L
HHHHH
L
L
HHH
L
HHH
L
HHHH
L
L
H
L
L
HHHHH
L
HHH
L
L
HH
L
HHHHHH
L
H
H
L
L
H
L
HHHHHHHH
L
H
L
L
HHHHHHHHHHH
L




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