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MC74HC4538A_16 Datasheet, PDF (8/14 Pages) ON Semiconductor – Dual Precision Monostable Multivibrator
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MC74HC4538A
tw(H)
50%
A
B
50%
tw(L)
tPLH
τ
50%
Q
tPHL
τ
Q
50%
tPLH
τ
tPHL
τ
VCC
GND
VCC
GND
tr
tf
90%
A
10%
Figure 7. Switching Waveform
trr
B
tf
RESET
tTLH
90%
Q
10%
tTHL
Q
90%
10%
50%
50%
tw(L)
tPHL
50%
tf
90%
10%
trec
50%
τ + trr
(RETRIGGERED PULSE)
tPLH
50%
Figure 8. Switching Waveform
VCC
GND
VCC
GND
VCC
GND
TEST POINT
OUTPUT
DEVICE
UNDER
TEST
CL*
*Includes all probe and jig capacitance
Figure 9. Test Circuit
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