MC74HC597A View Datasheet(PDF) - ON Semiconductor

Part Name

Description

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MC74HC597A

8-Bit Serial or Parallel Input/Serial-Output Shift Register with Input Latch

ON Semiconductor 

SHIFT CLOCK

SERIAL DATA

INPUT, SA

RESET

MC74HC597A

TIMING DIAGRAM

SERIAL SHIFT

PARALLEL LOAD

LATCH CLOCK

A

H

B

L

C

H

PARALLEL D

L

DATA

INPUTS

E

H

F

H

G

L

H

H

L

L

L

L

L

L

L

L

L

H

L

H

L

L

H

H

QH

L

LH L H H L H L H L H L L L

H

RESET

SHIFT

SERIAL

SHIFT

SERIAL SHIFT

SERIAL

SHIFT

REGISTER

L HH

SERIAL

SHIFT

LOAD LATCH PARALLEL LOAD

SHIFT REGISTER

LOAD LATCH

PARALLEL LOAD

SHIFT REGISTER

PARALLEL LOAD LATCH

AND SHIFT REGISTER

Figure 12. Timing Diagram

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