MC74HC165ADR2G_14 Просмотр технического описания (PDF) - ON Semiconductor
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MC74HC165ADR2G_14 Datasheet PDF : 12 Pages
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MC74HC165A
SWITCHING WAVEFORMS
tr
tf
CLOCK
90%
VCC
OR CLOCK INHIBIT
50%
10%
GND
tw
QH OR QH
90%
50%
10%
1/fmax
tPLH
tPHL
tTLH
tTHL
Figure 3. Serial−Shirt Mode
SERIAL SHIFT/
PARALLEL LOAD
QH OR QH
tw
50%
tPLH
50%
VCC
50%
GND
tPHL
Figure 4. Parallel−Load Mode
tr
INPUT H
tPLH
QH OR QH
90%
50%
10%
90%
50%
10%
tTLH
tf
VCC
GND
tPHL
tTHL
Figure 5. Parallel−Load Mode
INPUTS A-H
SERIAL SHIFT/
PARALLEL LOAD
VALID
VCC
50%
GND
tsu
th
VCC
GND
ASYNCHRONOUS PARALLEL
LOAD
(LEVEL SENSITIVE)
Figure 6. Parallel−Load Mode
VALID
SERIAL SHIFT/
VCC
VCC
PARALLEL LOAD
50%
INPUT SA
50%
GND
GND
tsu
th
tsu
th
CLOCK
VCC
CLOCK
VCC
OR CLOCK INHIBIT
50%
OR CLOCK INHIBIT
50%
GND
GND
Figure 7. Serial−Shift Mode
Figure 8. Serial−Shift Mode
CLOCK INHIBIT
CLOCK 2 INHIBITED
VCC
50%
GND
tsu
trec
VCC
CLOCK
50%
GND
Figure 9. Serial−Shift, Clock−Inhibit Mode
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
CL*
*Includes all probe and jig capacitance
Figure 10. Test Circuit
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