CD54HC139 Datasheet, PDF (2/11 Pages) Texas Instruments – High-Speed CMOS Logic Dual 2- to 4-Line Decoder/Demultiplexer

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