M54HC590D1 データシートの表示（PDF） - STMicroelectronics

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M54HC590D1

RAD-HARD 8 BINARY COUNTER REGISTER WITH 3 STATE OUTPUT

STMicroelectronics 

M54HC590

Figure 1: IEC Logic Symbols

Figure 2: Input And Output Equivalent Circuit

Table 1: Pin Description

Table 2: Truth Table

PIN N°

1, 2, 3, 4, 5,

6, 7, 15

11

12

13

9

14

10

8

16

SYMBOL NAME AND FUNCTION

QA to QH Outputs

CCK

CCKEN

RCK

RCO

G

CCLR

GND

VCC

Counter Clock Input

Counter Clock Enable

Input

Register Clock Input

Ripple Carry Output

Output Enable Input

Counter Clear Input

Ground (0V)

Positive Supply Voltage

INPUTS

G

RCK

CCLR CCKEN

CCK

OUTPUT

H

X

X

X

X

L

X

X

X

X

Q OUTPUTS DISABLE

Q OUTPUTS ENABLE

X

X

X

X

COUNTER DATA IS STORED INTO REGISTER

X

X

X

X

X

X

L

X

X

X

X

H

L

REGISTER STAGE IS NOT CHANGED

COUNTER CLEAR

ADVANCE ONE COUNT

X

X

H

L

X

X

H

H

X

NO COUNT

NO COUNT

X: Don’t Care

RCO = QA’·QB’·QC’·QD’·QE’·QF’·QG’·QH’ (QA’ to QH’: INTERNAL OUTPUTS OF THE COUNTER)

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