74LS191 데이터 시트보기 (PDF) - Fairchild Semiconductor

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74LS191

Synchronous 4-Bit Binary Counters

Fairchild Semiconductor 

AC Electrical Characteristics

Symbol

Parameter

From (Input)

To (Output)

fMAX

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

Maximum Clock

Frequency

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Load to

Any Q

Load to

Any Q

Data to

Any Q

Data to

Any Q

Clock to

Ripple Clock

Clock to

Ripple Clock

Clock to

Any Q

Clock to

Any Q

Clock to

Max/Min

Clock to

Max/Min

Up/Down to

Ripple Clock

Up/Down to

Ripple Clock

Down/Up to

Max/Min

Down/Up to

Max/Min

Enable to

Ripple Clock

Enable to

Ripple Clock

RL = 2 kΩ

CL = 15 pF

CL = 50 pF

Min

Max

Min

Max

20

20

33

43

50

59

22

26

50

62

20

24

24

33

24

29

36

45

42

47

52

65

45

50

45

54

33

36

33

42

33

36

33

42

Units

MHz

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

5

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