HD74LS191P Просмотр технического описания (PDF) - Renesas Electronics

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HD74LS191P

Synchronous Up / Down 4-bit Binary Counter (single clock line)

Renesas Electronics 

HD74LS191

Block Diagram

Clock

Down/Up

Data

Input A

Enable G

Data

Input B

Data

Input C

Data

Input D

Load

Preset

J QA

CK

K QA

Clear

Ripple

Clock

Max/Min

Output

Output QA

Preset

J QB

CK

K QB

Clear

Output QB

Preset

J QC

CK

K QC

Clear

Output QC

Preset

J QD

CK

K QD

Clear

Output QD

Absolute Maximum Ratings

Item

Symbol

Ratings

Unit

Supply voltage

VCC

7

V

Input voltage

VIN

7

V

Power dissipation

PT

400

mW

Storage temperature

Tstg

–65 to +150

°C

Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.

Rev.2.00, Feb.18.2005, page 3 of 10

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