74HC597 Datasheet, PDF(4/12 Page) NXP Semiconductors – 8-bit shift register with input flip-flops

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74HC597 Datasheet, PDF (4/12 Pages) NXP Semiconductors – 8-bit shift register with input flip-flops

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Philips Semiconductors

8-bit shift register with input ï¬ip-ï¬ops

Product speciï¬cation

74HC/HCT597

Fig.4 Functional diagram.

FUNCTION TABLE

STCP

SHCP PL

no clock edge X

Notes

1. H = HIGH voltage level

L = LOW voltage level

X = donât care

â = LOW-to-HIGH CP transition

FUNCTION

data loaded to input latches

data loaded from inputs to shift register

data transferred from input ï¬ip-ï¬ops to shift register

invalid logic, state of shift register indeterminate when signals removed

shift register cleared

shift register clocked Qn = Qnâ1, Q0 = DS

December 1990

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