74LV139 查看數據表（PDF） - Philips Electronics
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74LV139 Datasheet PDF : 12 Pages
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Philips Semiconductors
Dual 2-to-4 line decoder/demultiplexer
Product specification
74LV139
LOGIC DIAGRAM
1
1E
1Y 0
4
2
1A 0
1Y 1
5
3
1A 1
1Y 2
6
1Y 3
7
2Y 0
12
14
2A 0
2Y 1
11
13
2A 1
2Y 2
10
2E 2Y 3
9
15
SV00531
LOGIC SYMBOL (IEEE/IEC)
DX 0
4
2
0
G –0– 1
5
3
3
1
2
6
1
3
7
X/Y 0
4
2
1
1
5
3
2
2
6
1
EN
3
7
DX 0
14
0
01
G ––
3
13
1
2
15
3
(a)
12
14
11
13
10
15
9
FUNCTION TABLE
INPUTS
nE
nA0
H
X
L
L
L
H
L
L
L
H
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don’t care
X/Y 0
12
1
1
11
2
2
10
EN
3
9
(b)
SV00532
nA1
X
L
L
H
H
FUNCTIONAL DIAGRAM
2
1A0
3
1A1
DECODER
1
1E
14
2A0
13
2A1
DECODER
2E
15
OUTPUTS
nY0
nY1
nY2
H
H
H
L
H
H
H
L
H
H
H
L
H
H
H
1Y0
4
1Y1
5
1Y2
6
1Y3
7
2Y0
12
2Y1
11
2Y2
10
2Y3
9
SV00534
nY3
H
H
H
H
L
1998 Apr 28
3
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