MC74HC597A Datasheet, PDF (10/12 Pages) ON Semiconductor – 8-Bit Serial or Parallel- Input/Serial-Output Shift Register

SHIFT CLOCK
SERIAL DATA
INPUT, S_A
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
Q_H
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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