Figure 1. Forward voltage versus forward current
1.4
1.3
Ta = -55°C
1.2
1.1
Ta = 25°C
1.0
0.9
Ta = 85°C
0.8
0.7
.1
1
10
100
IF - Forward Current - mA
Figure 2. Normalized non-saturated and saturated
CTRce versus LED current
2.0
Normalized to:
Ta = 25°C
1.5
Vce = 5 V
IF = 2 mA
Vce = 5 V
1.0
0.5
0.0
.1
Vce = 1 V
1
10
100
IF - LED Current - mA
Figure 3. Normalized non-saturated and saturated
CTRce versus LED current
1.2 Normalized to:
1.0 Ta = 25°C
Vce = 5 V
0.8 IF = 10 ma
Vce = 5 V
0.6
0.4
0.2
0.0
.1
Vce = .4 V
1
10
100
IF - LED Current - mA
1000
Figure 4. Non-saturated and saturated collector
emitter current versus LED current
10000
1000
Vce = 5 V
100
Vce = .4 V
10
1
.1
.01
.001
.1
1
10
100
IF - LED Current - mA
Figure 5. High/low propagation delay versus
collector load resistance and LED current
50
40
10KΩ
30
Ta = 25°C
Vcc = 5 V
Vth = 1.5 V
20 220Ω
10
0
0
5
10
15
20
IF - LED Current - mA
Figure 6. Low/high propagation delay versus
collector load resistance and LED current
150
125
10KΩ
100
75 Ta = 25°C
50 Vcc = 5 V
Vth = 1.5 V
25
2KΩ
220Ω
0
0
5
10
15
20
IF - LED Current - mA
IL66B
5–2