74191 datasheet(3/6 Pages) NSC

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

MHz

tPLH

Propagation Delay Time

Load to

Low to High Level Output

Any Q

tPHL

Propagation Delay Time

Load to

High to Low Level Output

Any Q

tPLH

Propagation Delay Time

Data to

Low to High Level Output

Any Q

tPHL

Propagation Delay Time

Data to

High to Low Level Output

Any Q

tPLH

Propagation Delay Time

Clock to

Low to High Level Output

Ripple Carry

tPHL

Propagation Delay Time

Clock to

High to Low Level Output

Ripple Carry

tPLH

Propagation Delay Time

Clock to

Low to High Level Output

Any Q

tPHL

Propagation Delay Time

Clock to

High to Low Level Output

Any Q

tPLH

Propagation Delay Time

Clock to

Low to High Level Output

MaxMin

tPHL

Propagation Delay Time

Clock to

High to Low Level Output

MaxMin

tPLH

Propagation Delay Time

DownUp to

Low to High Level Output

Ripple Carry

tPHL

Propagation Delay Time

DownUp to

High to Low Level Output

Ripple Carry

tPLH

Propagation Delay Time

DownUp to

Low to High Level Output

MaxMin

tPHL

Propagation Delay Time

DownUp to

High to Low Level Output

MaxMin

tPLH

Propagation Delay Time

Enable G to

Low to High Level Output

Ripple Carry

tPHL

Propagation Delay Time

Enable G to

High to Low Level Output

Ripple Carry

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