13
V
CM
1
2
8
7
0.1 µF
V
20 kΩ
δV
δt
CM
∆t
20 kΩ
I
=
F
+
OV
V
= 15 V
CC
–
A
B
∆t
3
4
6
5
V
OUT
100 pF*
V
O
V
V
CC
+
–
SWITCH AT A: I = 0 mA
SHIELD
F
V
FF
*100 pF TOTAL
CAPACITANCE
V
O
OL
SWITCH AT B: I = 10 mA
F
+
V
= 1500 V
CM
Figure 7. CMR Test Circuit. Typical CMR Waveform.
500
400
300
200
100
600
500
400
300
800
I
V
= 10 mA
= 15 V
F
CC
t
t
PLH
PHL
I
V
= 10 mA
= 15 V
F
CL = 100 pF
RL = 20 kΩ
(INTERNAL)
CC
CL = 100 pF
= 25 °C
600
400
200
T
A
t
t
PLH
PHL
I
V
= 10 mA
= 15 V
CL = 100 pF
RL = 20 kΩ (EXTERNAL)
F
CC
t
t
PLH
PHL
200
100
20
– TEMPERATURE – °C
20
-40 -20
0
40
60 80 100
20
– TEMPERATURE – °C
0
10
40
-40 -20
0
40
60 80 100
30
50
T
RL – LOAD RESISTANCE – kΩ
T
A
A
Figure 8. Propagation Delay with
External 20 kΩ RL vs. Temperature.
Figure 9. Propagation Delay with
Internal 20 kΩ RL vs. Temperature.
Figure 10. Propagation Delay vs. Load
Resistance.
1400
500
1400
I
V
= 10 mA
= 15 V
I
= 10 mA
F
CC
F
t
t
PLH
PHL
CL = 100 pF
RL = 20 kΩ
T
1200
1000
800
RL = 20 kΩ
= 25°C
1200
1000
800
T
= 25°C
A
A
400
300
200
100
t
t
t
t
PLH
PHL
PLH
PHL
V
= 15 V
CC
CL = 100 pF
RL = 20 kΩ
600
600
T
= 25°C
A
400
400
200
0
200
0
0
100
200
300
400
500
5
10
15
20
25
30
0
5
10
I – FORWARD LED CURRENT – mA
F
15
20
CL – LOAD CAPACITANCE – pF
V
– SUPPLY VOLTAGE – V
CC
Figure 11. Propagation Delay vs. Load
Capacitance.
Figure 12. Propagation Delay vs.
Supply Voltage.
Figure 13. Propagation Delay vs. Input
Current.
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