PIN DESCRIPTION

PIN No

SYMBOL

NAME AND FUNCTION

1, 15

1G, 2G

Enable Inputs

2, 3

1A, 1B

Address Inputs

4, 5, 6, 7

Outputs

12, 11, 10, 9

Outputs

14, 13

2A, 2B

Address Inputs

8

GND

Ground (0V)

16

Positive Supply Voltage

IEC LOGIC SYMBOL

SCHEMATIC CIRCUIT

TRUTH TABLE

INPUTS

OUTPUTS

SELECTED

OUTPUT

ENABLE SELECT

GB

A

H

X

X

H

H

H

H

NONE

L

LLL

H

H

H

LL

H

H

L

H

H

LH

L

H

H

L

H

L

HHHHH

L

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

Supply Voltage

-0.5 to +7

V

DC Input Voltage

V

DC Output Voltage

V

DC Input Diode Current

± 20

mA

DC Output Diode Current

± 20

mA

DC Output Source Sink Current Per Output Pin

± 25

mA

± 50

mA

Power Dissipation

500 (*)

mW

Storage Temperature

-65 to +150

Lead Temperature (10 sec)

300

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.

(*) 500 mW:

M54/M74HC139

2/9