DM74191N datasheet(3/6 Pages) NSC

Numer części	DM74191N

Szczegółowy opis	Synchronous Up/Down 4-Bit Binary Counter with Mode Control

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Producent	NSC [National Semiconductor (TI)]

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3 / 6 page

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

Symbol

Parameter

From (Input)

RL e 400X CL e 15 pF

Units

To (Output)

Min

Max

fMAX

Maximum Clock Frequency

20

MHz

tPLH

Propagation Delay Time

Load to

33

ns

Low to High Level Output

Any Q

tPHL

Propagation Delay Time

Load to

70

ns

High to Low Level Output

Any Q

tPLH

Propagation Delay Time

Data to

22

ns

Low to High Level Output

Any Q

tPHL

Propagation Delay Time

Data to

70

ns

High to Low Level Output

Any Q

tPLH

Propagation Delay Time

Clock to

20

ns

Low to High Level Output

Ripple Carry

tPHL

Propagation Delay Time

Clock to

24

ns

High to Low Level Output

Ripple Carry

tPLH

Propagation Delay Time

Clock to

24

ns

Low to High Level Output

Any Q

tPHL

Propagation Delay Time

Clock to

36

ns

High to Low Level Output

Any Q

tPLH

Propagation Delay Time

Clock to

42

ns

Low to High Level Output

MaxMin

tPHL

Propagation Delay Time

Clock to

52

ns

High to Low Level Output

MaxMin

tPLH

Propagation Delay Time

DownUp to

45

ns

Low to High Level Output

Ripple Carry

tPHL

Propagation Delay Time

DownUp to

45

ns

High to Low Level Output

Ripple Carry

tPLH

Propagation Delay Time

DownUp to

33

ns

Low to High Level Output

MaxMin

tPHL

Propagation Delay Time

DownUp to

33

ns

High to Low Level Output

MaxMin

tPLH

Propagation Delay Time

Enable G to

24

ns

Low to High Level Output

Ripple Carry

tPHL

Propagation Delay Time

Enable G to

24

ns

High to Low Level Output

Ripple Carry

3

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