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CD54HC138F Fiches technique(PDF) 2 Page - Texas Instruments

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No de pièce CD54HC138F
Description  High-Speed CMOS Logic 3- to 8-Line Decoder/ Demultiplexer Inverting and Noninverting
PDF  14 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

CD54HC138F Fiches technique(HTML) 2 Page - Texas Instruments

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Pinout
CD54HC138, CD54HCT138, CD54HC238, CD54HCT238
(CERDIP)
CD74HC138, CD74HCT138, CD74HCT238
(PDIP, SOIC)
CD74HC238
(PDIP, SOIC, SOP, TSSOP)
TOP VIEW
Signal names in parentheses are for ’HC138 and ’HCT138.
Functional Diagram
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
A0
A1
A2
E1
E2
E3
GND
(Y7) Y7
VCC
Y1 (Y1)
Y2 (Y2)
Y3 (Y3)
Y4 (Y4)
Y5 (Y5)
Y6 (Y6)
Y0 (Y0)
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
HC/HCT
238
HC/HCT
138
TRUTH TABLE ’HC138, ’HCT138
INPUTS
OUTPUTS
ENABLE
ADDRESS
E3
E2
E1
A2
A1
A0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
X
H
X
X
X
HHHHHHHH
L
X
X
X
X
X
HHHHHHHH
X
H
X
X
X
X
HHHHHHHH
H
L
LLLLL
H
H
H
H
H
H
H
H
L
L
L
L
H
H
L
HHHHHH
H
L
L
L
H
L
HH
L
H
HHHH
H
L
L
L
HHHHH
L
HHHH
H
L
L
H
L
L
HHHH
L
HHH
H
L
L
H
L
HHHHHH
L
H
H
H
L
L
H
H
L
HHHHHH
L
H
H
L
L
H
HHHHHHHHH
L
H = High Voltage Level, L = Low Voltage Level, X = Don’t Care
TRUTH TABLE ’HC238, ’HCT238
INPUTS
OUTPUTS
ENABLE
ADDRESS
E3
E2
E1
A2
A1
A0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
X
H
X
X
X
LLLLLLLL
L
X
X
X
X
X
LLLLLLLL
X
H
X
X
X
X
LLLLLLLL
H
L
LLLL
H
LLLLLLL
H
L
LLL
H
L
H
LLLLLL
H
L
LL
H
L
LL
H
L
LLLL
H
L
LL
H
H
LLL
H
LLLL
H
L
L
H
LLLLLL
H
L
LL
HL
LHLHL
L
L
L
LHL
L
H
L
L
H
H
L
LLLLLL
H
L
H
L
L
H
H
H
LLLLLLL
H
H = High Voltage Level, L = Low Voltage Level, X = Don’t Care
CD54/74HC138, CD54/74HCT138, CD54/74HC238, CD54/74HCT238



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