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CD54HC138F Scheda tecnica(PDF) 2 Page - Texas Instruments

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Il numero della parte CD54HC138F
Spiegazioni elettronici  High-Speed CMOS Logic 3- to 8-Line Decoder/ Demultiplexer Inverting and Noninverting
PDF  14 Pages
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

CD54HC138F Scheda tecnica(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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