M74HCT139TTR Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

M74HCT139TTR

DUAL 2 TO 4 DECODER/DEMULTIPLEXER

STMicroelectronics 

M74HCT139

INPUT AND OUTPUT EQUIVALENT CIRCUIT

LOGIC DIAGRAM

PIN DESCRIPTION

PIN No

SYMBOL NAME AND FUNCTION

1, 15

2, 3

4, 5, 6, 7

12, 11, 10, 9

14, 13

8

16

1G, 2G

1A, 1B

1Y0 TO 1Y3

2Y0 TO 2Y3

2A, 2B

GND

VCC

Enable Inputs

Address Inputs

Outputs

Outputs

Address Inputs

Ground (0V)

Positive Supply Voltage

TRUTH TABLE

INPUTS

ENABLE SELECT

G

BA

OUTPUTS

Y0 Y1 Y2 Y3

SELECTED

OUTPUT

H

X X H H H H NONE

L

L L L HHH

Y0

L

L HH L HH

Y1

L

H L HH L H

Y2

L

HHHHH L

Y3

This logic diagram has not be used to estimate propagation delays

2/9

Share Link: