DM54LS190W datasheet(3/8 Pages) NSC

Part #	DM54LS190W

Description	Synchronous 4-Bit Up/Down Counters with Mode Control

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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’LS190 and ’LS191 Switching Characteristics

at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load)

From (Input)

RL e 2kX

Symbol

Parameter

To (Output)

CL e 15 pF

CL e 50 pF

Units

Min

Max

Min

Max

fMAX

Maximum Clock

20

MHz

Frequency

tPLH

Propagation Delay Time

Load to

33

43

ns

Low to High Level Output

Any Q

tPHL

Propagation Delay Time

Load to

50

59

ns

High to Low Level Output

Any Q

tPLH

Propagation Delay Time

Data to

22

26

ns

Low to High Level Output

Any Q

tPHL

Propagation Delay Time

Data to

50

62

ns

High to Low Level Output

Any Q

tPLH

Propagation Delay Time

Clock to

20

24

ns

Low to High Level Output

Ripple Clock

tPHL

Propagation Delay Time

Clock to

24

33

ns

High to Low Level Output

Ripple Clock

tPLH

Propagation Delay Time

Clock to

24

29

ns

Low to High Level Output

Any Q

tPHL

Propagation Delay Time

Clock to

36

45

ns

High to Low Level Output

Any Q

tPLH

Propagation Delay Time

Clock to

42

47

ns

Low to High Level Output

MaxMin

tPHL

Propagation Delay Time

Clock to

52

65

ns

High to Low Level Output

MaxMin

tPLH

Propagation Delay Time

UpDown to

45

50

ns

Low to High Level Output

Ripple Clock

tPHL

Propagation Delay Time

UpDown to

45

54

ns

High to Low Level Output

Ripple Clock

tPLH

Propagation Delay Time

DownUp to

33

36

ns

Low to High Level Output

MaxMin

tPHL

Propagation Delay Time

DownUp to

33

42

ns

High to Low Level Output

MaxMin

tPLH

Propagation Delay Time

Enable to

33

36

ns

Low to High Level Output

Ripple Clock

tPHL

Propagation Delay Time

Enable to

33

42

ns

High to Low Level Output

Ripple Clock

3

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Manufacturer	Part #	Datasheet	Description
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DM54LS190W Datasheet(PDF) 3 Page - National Semiconductor (TI)

DM54LS190W Datasheet(HTML) 3 Page - National Semiconductor (TI)

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