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DM74S139 Fiches technique(PDF) 2 Page - Fairchild Semiconductor

No de pièce DM74S139
Description  Decoder/Demultiplexer
Download  5 Pages
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74S139 Fiches technique(HTML) 2 Page - Fairchild Semiconductor

  DM74S139 Datasheet HTML 1Page - Fairchild Semiconductor DM74S139 Datasheet HTML 2Page - Fairchild Semiconductor DM74S139 Datasheet HTML 3Page - Fairchild Semiconductor DM74S139 Datasheet HTML 4Page - Fairchild Semiconductor DM74S139 Datasheet HTML 5Page - Fairchild Semiconductor  
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Connection Diagrams
DM74S138
DM74S139
Function Tables
DM74S138
DM74S139
* G2
= G2A + G2B
H
= HIGH level
L
= LOW level
X
= don’t care (either LOW or HIGH logic level)
Logic Diagrams
DM74S138
DM74S139
Inputs
Outputs
Enable
Select
G1
G2* C B A Y0
Y1
Y2
Y3 Y4 Y5 Y6 Y7
X
H
X X X
HHHH
H
H
H
H
L
X
X X X
HHHH
H
H
H
H
H
L
LLL
L
H
H
H
H
H
H
H
HL
L
L
H
H
L
H
H
H
H
H
H
HL
L
H
L
H
H
L
H
H
H
H
H
H
L
L
H H
HHH
L
H
H
H
H
H
L
H
L
L
HHHH
L
H
H
H
H
L
H
L
H
HHHH
H
L
H
H
H
L
H H
L
HHHH
H
H
L
H
H
L
H H H
HHHH
H
H
H
L
Inputs
Outputs
Enable
Select
G
B
A
Y0Y1Y2Y3
H
X
X
HHHH
L
L
L
L
HHH
LL
H
H
L
H
H
LH
L
H
H
L
H
L
H
H
HHH
L


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