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

MC74HC597A
SWITCHING WAVEFORMS
t_w
t_r
t_f
90%
V_CC
1/f_max
t_w
V_CC
LATCH CLOCK
50%
SHIFT CLOCK
50%
10%
GND
GND
t_PLH
t_PHL
Q_H
90%
50%
10%
t_TLH
t_THL
Figure 3. (Serial Shift/Parallel Load = L)
RESET
t_PHL
Q_H
t_w
50%
50%
SHIFT CLOCK
V_CC
GND
t_rec
Figure 5.
t_PLH
t_PHL
Q_H
50%
Figure 4. (Serial Shift/Parallel Load = H)
SERIAL SHIFT/
PARALLEL LOAD
Q_H
t_w
50%
t_PLH
50%
V_CC
50%
GND
t_PHL
Figure 6.
PARALLEL DATA
A/H
LATCH CLOCK
VALID
50%
t_su
t_h
50%
Figure 7.
SERIAL SHIFT/
PARALLEL LOAD
SHIFT CLOCK
50%
t_su
50%
Figure 9.
V_CC
GND
V_CC
GND
V_CC
GND
V_CC
GND
VALID
SERIAL DATA
V_CC
INPUT S_A
50%
GND
t_su
t_h
V_CC
SHIFT CLOCK
50%
GND
Figure 8.
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
C_L*
*Includes all probe and jig capacitance
Figure 10. Test Circuit
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