M74HC592(1993) データシートの表示（PDF） - STMicroelectronics

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M74HC592
(Rev.:1993)

8 BIT REGISTER BINARY COUNTER

STMicroelectronics 

M54/M74HC592

TRUTH TABLE

INPUTS

RCK CLOAD CCLR CCKEN CCK

X

L

H

X

X

X

H

L

X

X

H

H

X

X

H

H

X

X

X

H

H

L

X

H

H

L

X

H

H

H

X

X: Don’t Care

RCO = QA’ • QB’ • QC’ • QD’ • QE’ • QF’ • QG’ • QH’

(QA’ to QH’: Internal outputs of the counter)

FUNCTION

REGISTER DATA IS LOADED INTO COUNTER

COUNTER CLEAR

THE DATA OF A THRU H INPUTS IS STORED INTO REGISTER

REGISTER STATE IS NOT CHANGED

COUNTER ADVANCES THE COUNT

NO COUNT

NO COUNT

TIMING CHART

2/13

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