74HCT597 데이터 시트보기 (PDF) - Philips Electronics

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74HCT597

8-bit shift register with input flip-flops

Philips Electronics 

Philips Semiconductors

8-bit shift register with input flip-flops

Product specification

74HC/HCT597

Fig.4 Functional diagram.

FUNCTION TABLE

STCP

SHCP PL

MR

↑

X

X

X

↑

X

L

H

no clock edge X

L

H

X

X

L

L

X

X

H

L

X

↑

H

H

Notes

1. H = HIGH voltage level

L = LOW voltage level

X = don’t care

↑ = LOW-to-HIGH CP transition

FUNCTION

data loaded to input latches

data loaded from inputs to shift register

data transferred from input flip-flops to shift register

invalid logic, state of shift register indeterminate when signals removed

shift register cleared

shift register clocked Qn = Qn−1, Q0 = DS

December 1990

4

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