’LS139 Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 1)

Input Clamp Voltage

b

15

V

High Level Output

DM54

25

34

V

Voltage

DM74

27

34

Low Level Output

DM54

025

04

Voltage

DM74

035

05

V

DM74

025

04

Input Current

Max

01

mA

Input Voltage

High Level Input Current

20

m

A

Low Level Input Current

b

036

mA

Short Circuit

DM54

b

20

b

100

mA

Output Current

(Note 2)

DM74

b

20

b

100

Supply Current

68

11

mA

Note 1

Note 2

Not more than one output should be shorted at a time and the duration should not exceed one second

Note 3

’LS139 Switching Characteristics

From (Input)

Symbol

Parameter

To (Output)

Units

Min

Max

Min

Max

Propagation Delay Time

Select to

18

27

ns

Low to High Level Output

Output

Propagation Delay Time

Select to

27

40

ns

High to Low Level Output

Output

Propagation Delay Time

Enable to

18

27

ns

Low to High Level Output

Output

Propagation Delay Time

Enable to

24

40

ns

High to Low Level Output

Output

Function Tables

LS138

Inputs

Outputs

Enable

Select

G1 G2

C B AYOY1Y2Y3Y4Y5Y6Y7

X

H

X

X

X

H

H

HHHHHH

L

X

X

X

X

H

H

HHHHHH

H

L

L

L

L

L

H

HHHHHH

H

L

L

L

H

H

L

H

HHHHH

H

L

L

H

L

H

H

L

H

HHHH

H

L

L

H H

H

HH

L

H

HHH

H

L

H

L

L

H

HHH

L

HHH

H

L

H

L

H

H

H

HHH

L

HH

H

L

H H

L

H

HHHHH

L

H

H

L

H H H

H

H

HHHHH

L

LS139

Inputs

Outputs

Enable

Select

G

B

AY0Y1Y2Y3

H

X

X

HHHH

L

L

L

L

HHH

L

L

H

HLH

H

L

H

L

H

HLH

L

H

H

HHH

L

4