HD74HC592 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74HC592

8-bit Register/Binary Counter

Hitachi -> Renesas Electronics 

HD74HC592

8-bit Register/Binary Counter

Description

The HD74HC592 consists of a parallel input, 8-bit storage register feeding an 8-bit binary counter. Both

the register and the counter have individual positive edge-triggered clocks. In addition, the counter has

direct load and clear functions. Expansion is easily accomplished by connecting RCO of the first stage to

the count enable of the second stage, etc.

Features

• High Speed Operation: tpd (CCK to RCO) = 24 ns typ (CL = 50 pF)

• High Output Current: Fanout of 10 LSTTL Loads

• Wide Operating Voltage: VCC = 2 to 6 V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)

Function Table

Inputs

RCK

X

X

X

X

X

CLoad

L

H

H

H

H

H

H

CCLR

H

L

H

H

H

H

H

CCKEN

X

X

X

X

L

L

H

CCK

X

X

X

X

X

Function

Regiater data loaded into counter

Counter clear

Input data A to H stored into register

No change in register

Count up

No count

No cont

RCO = QA’•QB’•QC’•QD’•QE’•QF’•QG’•QH’• (CCKEN) (QA’ to QH’: Output of Internal Counter)

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