Datasheet

2
Functional Diagram
Logic Diagram
TRUTH TABLE
INPUTS ENABLE SELECT OUTPUTS
EA1A0Y3 Y2 Y1 Y0
0001110
0011101
0101011
0110111
1XX1111
X = Don’t Care, Logic 1 = High, Logic 0 = Low
A0
2 (14)
3 (13)
4 (12)
Y3
Y0
A1
1 (15)
E
5 (11)
6 (10)
7 (9)
Y1
Y2
4 (12)
5 (11)
Y0
Y1
6 (10)
Y2
7 (9)
Y3
2 (14)
A0
3 (13)
A1
1 (15)
E
CD54HC139, CD74HC139, CD54HCT139, CD74HCT139