74HC595 查看數據表（PDF） - ON Semiconductor

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74HC595

8−Bit Serial−Input/Serial or Parallel−Output Shift Register with Latched 3−State Outputs

ON Semiconductor 

SHIFT

CLOCK

SERIAL DATA

INPUT A

RESET

LATCH

CLOCK

OUTPUT

ENABLE

QA

QB

QC

QD

QE

QF

QG

QH

SERIAL DATA

OUTPUT SQH

NOTE:

74HC595

TIMING DIAGRAM

implies that the output is in a high−impedance

state.

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