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| HCPL-675X Datasheet, PDF (11/12 Pages) Agilent(Hewlett-Packard) – Hermetically Sealed, Low IF, Wide VCC, High Gain Optocouplers | |||
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11
PULSE GEN.
ZO = 50 â¦
tr, tf = 50 ns
f = 100 Hz
tPULSE = 0.5ms
IF
IF MONITOR
Rm
D.U.T.
VCC
RCC*
56 â¦
1.0 µF
+5 V
RL
VO
GND
CL**
* SEE NOTE 11
** CLINCLUDES PROBE AND STRAY WIRING CAPACITANCE.
IF
B
D.U.T.
RCC* 56 â¦
+5 V
VCC
1.0 µF RL
A
VO
VFF
* SEE NOTE 11
GND
+
VâCM
PULSE GEN.
Figure 8. Switching Test Circuit (f, tP
not JEDEC registered).
VCC
R1
ILEAK R2
R2 >
2.4 - VF
IF
R1
<
VCC - VF - IF R2
IF + ILEAK
D.U.T.
VCC
VO
GND
Figure 9. Test Circuit for Transient Immunity and
Typical Waveforms.
R2 MAY BE OMITTED
IF ADDITIONAL FANOUT
IS NOT USED.
Figure 10. Recommended Drive Circuitry Using TTL Open-Collector Logic.
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