
PHOTOTRANSISTOR OPTOCOUPLERS
IF
INPUT
VCC = 5V
RL
IC
OUTPUT (VCE)
Figure 19. Switching Time Test Circuit
CNY17-1 CNY17-3
CNY17-2 CNY17-4
INPUT PULSE
10%
90%
td
tr
ton
OUTPUT PULSE
ts
tf
toff
Figure 20. Switching Time Waveforms
DS300208 6/06/01
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