MM54HCT190 datasheet(3/8 Pages) NSC

Part #	MM54HCT190

Description	Level changes on Enable or Down/Up can be made regardless of the level of the clock

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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3 / 8 page

AC Electrical Characteristics TA e 25 C VCC e 50V tr e tf e 6 ns CL e 15 pF unless otherwise specified

Symbol

Parameter

From

To

Conditions

Typ

Guaranteed

Units

Input

Output

Limits

fMAX

Maximum Clock Frequency

40

MHz

tPLH tPHL

Maximum Propagation

Load

QA QB

30

ns

Delay Time

QC QD

tPLH tPHL

Maximum Propagation

Data A

QA QB

27

ns

Delay Time

B C D

QC QD

tPLH tPHL

Maximum Propagation

Clock

Ripple Clock

16

ns

Delay Time

tPLH tPHL

Maximum Propagation

Clock

QA QB

24

ns

Delay Time

QC QD

tPLH tPHL

Maximum Propagation

Clock

MaxMin

30

ns

Delay Time

tPLH tPHL

Maximum Propagation

DownUp

Ripple Clock

29

ns

Delay Time

tPLH tPHL

Maximum Propagation

DownUp

MaxMin

22

ns

Delay Time

tPHL tPLH

Maximum Propagation

Enable

Ripple Clock

22

ns

Delay Time

tW

Minimum Clock or Load

10

ns

Input Pulse Width

3

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MM54HCT190 Datasheet(PDF) 3 Page - National Semiconductor (TI)

MM54HCT190 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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