SN74LS669

http://onsemi.com

3

Symbol

Parameter

Limits

Unit

Test Conditions

Min

Typ

Max

Input HIGH Voltage

2.0

V

Guaranteed Input HIGH Voltage for

All Inputs

Input LOW Voltage

54

0.7

V

Guaranteed Input LOW Voltage for

All Inputs

74

0.8

Input Clamp Diode Voltage

−0.65

−1.5

V

Output HIGH Voltage

54

2.5

3.5

V

74

2.7

3.5

V

Output LOW Voltage

54, 74

0.25

0.4

V

per Truth Table

74

0.35

0.5

V

Input HIGH Current

Others

20

μA

Enable T

40

μA

Others

0.1

mA

Enable T

0.2

mA

Input LOW Current

Others

−0.4

mA

Enable T

−0.8

mA

Short Circuit Current (Note 1)

−20

−100

mA

Power Supply Current

34

mA

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

Symbol

Parameter

Limits

Unit

Test Conditions

Min

Typ

Max

Maximum Clock Frequency

25

32

MHz

Propagation Delay,

Clock to RCO

26

40

40

60

ns

Propagation Delay,

Clock to Any Q

18

18

27

27

ns

Enable to RCO

11

29

17

45

ns

U/D to RCO

22

26

35

40

ns

Symbol

Parameter

Limits

Unit

Test Conditions

Min

Typ

Max

Clock Pulse Width

20

ns

Data Setup Time

20

ns

Enable Setup Time

35

ns

Load Setup Time

25

ns

U/D Setup Time

30

ns

Hold Time, Any Input

0

ns