SN74LVC139A_07 Datasheet, PDF (2/30 Pages) Texas Instruments – DUAL 2-LINE TO 4-LINE DECODER/DEMULTIPLEXER

SN74LVC139A
DUAL 2-LINE TO 4-LINE DECODER/DEMULTIPLEXER
SCAS341O – MARCH 1994 – REVISED FEBRUARY 2005
www.ti.com
GQN OR ZQN PACKAGE
(TOP VIEW)
1234
A
B
C
D
E
TERMINAL ASSIGNMENTS
1
2
3
4
A
1A
1G
V_CC
2G
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
SELECT
G
B
A
L
L
L
L
L
H
L
H
L
L
H
H
H
X
X
OUTPUTS
Y3
Y2
Y1
Y0
H
H
H
L
H
H
L
H
H
L
H
H
L
H
H
H
H
H
H
H
LOGIC DIAGRAM (POSITIVE LOGIC)
1
1G
Select
Inputs
2
1A
3
1B
15
2G
Select
Inputs
14
2A
2B ¹³
Pin numbers shown are for the D, DB, DGV, NS, PW, and RGY packages.
4
1Y0
5
1Y1
6
1Y2
7
1Y3
12
2Y0
11
2Y1
10
2Y2
Data
Outputs
9
2Y3
2