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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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©1993 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74VHCT138A Rev. 1.2
2
Connection Diagram
Pin Description
Logic Symbols
IEEE/IEC
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
Pin Names
Description
A0–A2
Address Inputs
E1–E2
Enable Inputs
E3
Enable Input
O0–O7
Outputs
Inputs
Outputs
E1
E2
E3
A0
A1
A2
O0
O1
O2
O3
O4
O5
O6
O7
H
XXXXX
HHHHHHHH
XH
XXXX
HHHHHHHH
X
XL
XXX
HHHHHHHH
LL
H
LLLL
HHHHHHH
LL
HH
L
L
H
L
HHHHHH
L
LHLHLH
HL
HHHHH
LL
HHH
L
HHH
L
HHHH
L
LHL
L
HHHHH
L
HHH
LL
HH
L
HHHHHH
L
H
H
L
LHL
HHHHHHHH
L
H
LL
HHHHHHHHHHH
L




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