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Supply Voltage

7V

Input Voltage

7V

Operating Free Air Temperature Range

54LS

b

DM74LS

Storage Temperature Range

b

Note

The ‘‘Absolute Maximum Ratings’’ are those values

beyond which the safety of the device cannot be guaran-

teed The device should not be operated at these limits The

parametric values defined in the ‘‘Electrical Characteristics’’

table are not guaranteed at the absolute maximum ratings

The ‘‘Recommended Operating Conditions’’ table will define

the conditions for actual device operation

Recommended Operating Conditions

Symbol

Parameter

54LS14

DM74LS14

Units

Min

Nom

Max

Min

Nom

Max

Supply Voltage

45

5

55

475

5

525

V

Positive-Going Input

15

16

20

14

16

19

V

Threshold Voltage (Note 1)

Negative-Going Input

06

08

11

05

08

1

V

Threshold Voltage (Note 1)

HYS

Input Hysteresis (Note 1)

04

08

04

08

V

High Level Output Current

b

04

b

04

mA

Low Level Output Current

4

8

mA

Free Air Operating Temperature

b

55

125

0

70

C

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 2)

Input Clamp Voltage

b

15

V

High Level Output

54LS

25

34

V

Voltage

DM74

27

34

Low Level Output

54LS

025

04

Voltage

DM74

035

05

V

DM74

025

04

Input Current at

DM74

b

014

mA

Positive-Going Threshold

Input Current at

DM74

b

018

mA

Negative-Going Threshold

Input Current

Max

DM74

01

mA

Input Voltage

54LS

High Level Input Current

20

m

A

Low Level Input Current

b

04

mA

Short Circuit

54LS

b

20

b

100

mA

Output Current

(Note 3)

DM74

b

20

b

100

Supply Current with

86

16

mA

Outputs High

Supply Current with

12

21

mA

Outputs Low

Note 1

Note 2

Note 3

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

2