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SN74HC139PWRG4 Fiches technique(PDF) 2 Page - Texas Instruments

No de pièce SN74HC139PWRG4
Description  DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
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SN74HC139PWRG4 Fiches technique(HTML) 2 Page - Texas Instruments

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SN54HC139, SN74HC139
DUAL 2LINE TO 4LINE DECODERS/DEMULTIPLEXERS
SCLS108D − DECEMBER 1982 − REVISED SEPTEMBER 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
The ’HC139 devices comprise two individual 2-line to 4-line decoders in a single package. The active-low enable
(G) input can be used as a data line in demultiplexing applications. These decoders/demultiplexers feature fully
buffered inputs, each of which represents only one normalized load to its driving circuit.
FUNCTION TABLE
INPUTS
OUTPUTS
G
SELECT
OUTPUTS
G
B
A
Y0
Y1
Y2
Y3
H
X
X
H
H
H
H
L
L
LL
HH
H
L
L
HH
LH
H
L
H
LH
HLH
L
H
H
H
H
H
L
logic diagram (positive logic)
1G
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
1A
1B
2G
2A
2B
Pin numbers shown are for the D, DB, J, N, NS, PW, and W packages.
1
2
3
15
14
13
4
5
6
7
12
11
10
9


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