74HC4538 Просмотр технического описания (PDF) - ON Semiconductor
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74HC4538 Datasheet PDF : 16 Pages
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MC74HC4538A
tr
tf
90%
A
10%
B
tf
RESET
tTLH
90%
Q
10%
tTHL
Q
90%
10%
50%
50%
tw(L)
tPHL
50%
tf
90%
10%
trec
tPLH
50%
trr
τ + trr
50% (RETRIGGERED PULSE)
Figure 9. Switching Waveform
VCC
GND
VCC
GND
VCC
GND
TEST POINT
OUTPUT
DEVICE
UNDER
TEST
CL*
*Includes all probe and jig capacitance
Figure 10. Test Circuit
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