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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

54LS194A

DM74LS194A

Units

Min

Nom

Max

Min

Nom

Max

Supply Voltage

45

5

55

475

5

525

V

High Level Input Voltage

2

2

V

Low Level Input Voltage

07

08

V

High Level Output Current

b

04

b

04

mA

Low Level Output Current

4

8

mA

Clock Frequency (Note 1)

30

0

0

25

MHz

Clock Frequency (Note 2)

22

0

20

Pulse Width

Clock

17

20

ns

(Note 3)

Clear

12

20

Setup Time

Mode

25

30

ns

(Note 3)

Data

16

20

Hold Time (Note 3)

0

0

ns

Clear Release Time (Note 3)

18

25

ns

Free Air Operating Temperature

b

55

125

0

70

C

Note 1

Note 2

Note 3

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 4)

Input Clamp Voltage

b

15

V

High Level Output

54LS

25

V

Voltage

DM74

27

34

Low Level Output

54LS

04

Voltage

DM74

035

05

V

04

Input Current

Max

01

mA

Input Voltage

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 5)

DM74

b

20

b

100

Supply Current

15

23

mA

Note 4

Note 5

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

Note 6

45V applied to CLOCK

2