CD74HC139 查看數據表（PDF） - Harris Semiconductor

零件编号

产品描述 (功能)

生产厂家

CD74HC139

High Speed CMOS Logic Dual 2-to-4 Line Decoder/Demultiplexer

Harris Semiconductor 

Functional Diagram

CD74HC139, CD74HCT139

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

NOTE: 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

Share Link: