HD74LS160 查看數據表（PDF） - Renesas Electronics

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HD74LS160

Synchronous Decade Counter (direct clear)

Renesas Electronics 

HD74LS160A

Recommended Operating Conditions

Item

Supply voltage

Output current

Operating temperature

Clock frequency

Clock pulse width

Clear pulse width

A, B, C, D

Setup time

Enable P, T

Load

Hold time

Symbol

VCC

IOH

IOL

Topr

ƒclock

tw (clock)

tw (clear)

tsu

th

Min

4.75

—

—

–20

0

25

20

20

20

20

3

Typ

5.00

—

—

25

—

—

—

—

—

—

—

Typical Clear, Preset, and Inhibit Sequence

Clear

Load

A

Data B

Inputs C

D

Clock

Enable P

Enable T

QA

QB

Outputs

QC

QD

Ripple Carry

Output

Clear

789012

Count

Preset

(Load)

Max

5.25

–400

8

75

25

—

—

—

—

—

—

Unit

V

µA

mA

°C

MHz

ns

ns

ns

ns

ns

ns

Inhibit

Rev.3.00, Jul.15.2005, page 3 of 10

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