Datasheet

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GQN OR ZQN PACKAGE
(TOP VIEW)
1 2 3 4
A
B
C
D
E
Select
Inputs
Select
Inputs
2B
2A
2G
1B
1A
1G
Data
Outputs
2Y3
2Y2
2Y1
2Y0
1Y3
1Y2
1Y1
1Y0
1
2
3
15
14
13
4
5
6
7
12
11
10
9
Pin numbers shown are for the D, DB, DGV, NS, PW, and RGY packages.
SN74LVC139A
DUAL 2-LINE TO 4-LINE DECODER/DEMULTIPLEXER
SCAS341O – MARCH 1994 – REVISED FEBRUARY 2005
TERMINAL ASSIGNMENTS
1 2 3 4
A 1A 1 G V
CC
2 G
B 1B NC
(1)
NC
(1)
2A
C 1Y1 1Y0 2Y0 2B
D 1Y2 NC
(1)
NC
(1)
2Y1
E GND 1Y3 2Y3 2Y2
(1) NC - No internal connection
FUNCTION TABLE
(EACH DECODER/DEMULTIPLEXER)
INPUTS
OUTPUTS
SELECT
G
B A Y3 Y2 Y1 Y0
L L L H H H L
L L H H H L H
L H L H L H H
L H H L H H H
H X X H H H H
LOGIC DIAGRAM (POSITIVE LOGIC)
2