7490 datasheet(5/10 Pages) NSC

Il numero della parte	7490

Spiegazioni elettronici	Decade and Binary Counters

PDF	10 Pages

Scroll/Zoom	100%

Produttore elettronici	NSC [National Semiconductor (TI)]

Homepage	http://www.national.com

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5 / 10 page

’93A Switching Characteristics

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

From (Input)

RL e 400X

Symbol

Parameter

To (Output)

CL e 15 pF

Units

Min

Max

fMAX

Maximum Clock

A to QA

MHz

Frequency

BtoQB

tPLH

Propagation Delay Time

A to

Low to High Level Output

tPHL

Propagation Delay Time

A to

High to Low Level Output

tPLH

Propagation Delay Time

A to

Low to High Level Output

tPHL

Propagation Delay Time

A to

High to Low Level Output

tPLH

Propagation Delay Time

B to

Low to High Level Output

tPHL

Propagation Delay Time

B to

High to Low Level Output

tPLH

Propagation Delay Time

B to

Low to High Level Output

tPHL

Propagation Delay Time

B to

High to Low Level Output

tPLH

Propagation Delay Time

B to

Low to High Level Output

tPHL

Propagation Delay Time

B to

High to Low Level Output

tPHL

Propagation Delay Time

SET-0

High to Low Level Output

Any Q

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