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CD54AC138 Datasheet(PDF) 2 Page - Texas Instruments

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Part No. CD54AC138
Description  3-to-8-Line Decoders/Demultiplexers
Download  7 Pages
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD54AC138 Datasheet(HTML) 2 Page - Texas Instruments

   
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2
Functional Diagram
15
14
13
12
10
7
9
11
1
2
3
5
6
4
E3
E2
E1
A2
A1
A0
Y0
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Y7
Y6
Y5
Y4
Y3
Y2
Y1
AC/ACT
238
AC/ACT
138
CD74AC/ACT138 TRUTH TABLE
INPUTS
OUTPUTS
ENABLE
ADDRESS
E3
(NOTE 4)
E0
A2
A1
A0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
H
X
X
X
H
HHHHHHH
L
X
X
X
X
H
HHHHHHH
H
L
L
L
L
L
HHHHHHH
HL
L
L
H
H
L
H
H
H
H
H
H
H
L
LHLH
HLH
H
H
H
H
H
L
LH
H
H
H
H
LH
H
H
H
H
L
H
L
L
H
HHH
L
HHH
H
L
HL
LH
H
H
H
H
LH
H
HL
H
H
L
H
H
H
H
H
H
L
H
H
L
HHHHHHHHHH
L
CD74AC/ACT238 TRUTH TABLE
INPUTS
OUTPUTS
ENABLE
ADDRESS
E3
(NOTE 4)
E0
A2
A1
A0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
H
X
X
X
L
LLLLLLL
L
X
X
X
X
L
LLLLLLL
H
L
LLL
H
LLLLLLL
H
L
LL
H
L
H
L
LLLLL
H
L
L
H
LLL
H
LLLLL
H
L
LH
HL
L
L
HL
L
L
L
H
L
H
LLLLLL
H
LLL
HL
H
L
H
L
L
L
L
L
H
L
L
H
L
H
H
LLLLLLL
H
L
H
L
H
H
H
L
LLLLLL
H
NOTES:
3. H = High Level, L = Low Level, X = Don’t Care
4. E0 = E1 + E2
CD54/74AC138, CD54/74ACT138, CD74AC238, CD74ACT238


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