SN74LS74A

http://onsemi.com

3

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

Limits

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Input HIGH Voltage

2.0

V

Guaranteed Input HIGH Voltage for

All Inputs

Input LOW Voltage

0.8

V

Guaranteed Input LOW Voltage for

All Inputs

Input Clamp Diode Voltage

– 0.65

– 1.5

V

Output HIGH Voltage

2.7

3.5

V

Output LOW Voltage

0.25

0.4

V

Output LOW Voltage

0.35

0.5

V

per Truth Table

Input High Current

Data, Clock

Set, Clear

20

40

µA

IH

Data, Clock

Set, Clear

0.1

0.2

mA

Input LOW Current

Data, Clock

Set, Clear

– 0.4

– 0.8

mA

Output Short Circuit Current (Note 1)

–20

–100

mA

Power Supply Current

8.0

mA

Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.

Limits

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Maximum Clock Frequency

25

33

MHz

Figure 1

V

50 V

Clock Clear Set to Output

13

25

ns

Figure 1

PLH

Clock, Clear, Set to Output

25

40

ns

Figure 1

Limits

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Clock

25

ns

Figure 1

Clear, Set

25

ns

Figure 2

t

Data Setup Time — HIGH

20

ns

Figure 1

20

ns

Figure 1

Hold Time

5.0

ns

Figure 1