Datasheet

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Document Number: 83640
4 Rev. 1.6, 09-Jan-08
IL74/ILD74/ILQ74
Vishay Semiconductors
Optocoupler, Phototransistor Output
(Single, Dual, Quad Channel)
Fig. 5 - Normalized Non-Saturated and Saturated CTR vs.
LED Current
Fig. 6 - Collector Emitter Current vs. Temperature and LED Current
Fig. 7 - Collector Emitter Leakage Current vs.Temperature
Fig. 8 - Normalized CTR
cb
vs. LED Current and Temperature
Fig. 9 - Collector Base Photocurrent vs. LED Current
Fig. 10 - Normalized Photocurrent vs. I
F
and Temperature
iil74_05
0.1 1 10 100
1.5
1.0
0.5
0.0
I
F
- LED Current (mA)
NCTR - Normalized CTR
NCTR(SAT)
NCTR
Normalized to:
V
CE
= 10 V,I
F
= 10 mA, T
A
= 25 °C
CTRce(sat) V
CE
= 0.4 V
T
A
= 85 °C
iil74_06
60503020100
0
5
10
15
20
25
30
35
50 °C
70 °C
85 °C
I
F
- LED Current (mA)
I
CE
- Collector Current (mA)
25 °C
40
iil74_07
100806040200- 20
10
10
10
10
10
10
10
10
-2
-1
0
1
2
3
4
5
T
A
- Ambient Temperature (°C)
I
CEO
- Collector Emitter (nA)
V
CE
= 10 V
Typical
iil74_08
0.1 1 10 100
0.0
0.5
1.0
1.5
25 °C
50 °C
70 °C
I
F
- Current (mA)
NCTRcb - Normalized CTRcb
I
F
= 10 mA
V
cb
= 9.3 V
T
a
= 25 °C
Normalized to:
iil74_09
100
1010.1
0.01
0.1
1
10
100
1000
I
F
- LED Current (mA)
Icb - Collector Base
Photocurrent - µA
Icb = 1.0357 * IF ^ 1.3631
T
a
= 25 °C
iil74_10
100
10
1
0.1
0.01
0.1
1
10
I
F
- LED Current (mA)
Normalized Photcurrent
Normalized to:
I
F
= 10 mA, T
a
= 25 °C
NIB - T
a
= - 20 °C
NIb, T
a
= 25 °C
NIb, T
a
= 50 °C
NIb, T
a
= 70 °C