Single-Channel: 6N138, 6N139 Dual-Channel: HCPL-2730, HCPL-2731 Low Input Current High Gain Split Darlington Optocouplers
Fig. 10 Current Transfer Ratio vs. Base-Emitter Resistance
(6N138 / 6N139 Only)
1600
Fig. 11 Current Transfer Ratio vs. Forward Current
(HCPL-2730 / HCPL-2731 Only)
5000
V
CC
= 5 V
V
O
= 0.4 V
4000
T
A
= 70˚C
T
A
= 85˚C
T
A
= 25˚C
3000
T
A
= 0˚C
CTR - CURRENT TRANSFER RATIO (%)
1400
1200
1000
800
CTR - CURRENT TRANSFER RATIO - %
600
2000
T
A
= -40˚C
400
I
F
= 1.6 mA
V
CC
= 5 V
V
O
= 0.4 V
1
10
100
1000
1000
200
0
0
0.1
1
10
100
R
BE
- BASE RESISTANCE (kΩ)
I
F
- FORWARD CURRENT - mA
Fig. 12 Output Current vs Output Voltage
(6N138 / 6N139 Only)
60
V
CC
= 5V
T
A
= 25˚C
50
5 mA
4.5 mA
4 mA
3.5 mA
100
3 mA
120
Fig. 13 Output Current vs Output Voltage
(HCPL-2730 / HCPL-2731 Only)
IF = 5.0 mA
IF = 4.5 mA
TA = 25˚C
VCC = 5.0 V
IF = 4.0 mA
I
O
- OUTPUT CURRENT (mA)
I
O
-OUTPUT CURRENT - mA
IF = 3.5 mA
80
IF = 3.0 mA
IF = 2.5 mA
60
IF = 2.0 mA
IF = 1.5 mA
40
IF = 1.0 mA
40
2.5 mA
2 mA
30
1.5 mA
20
1 mA
10
20
IF = 0.5 mA
0
0
1
2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
V
O
- OUTPUT VOLTAGE (V)
V
O
- OUTPUT VOLTAGE (V)
Fig. 14 Output Current vs. Input Diode Forward Current
(6N138 / 6N139 Only)
100
100
Fig. 15 Output Current vs
Input Diode Forward Current
(HCPL-2730 / HCPL-2731 Only)
V
CC
= 5.0 V
VO = 0.4 V
T
A
= 85˚C
I
O
- OUTPUT CURRENT (mA)
I
O
- OUTPUT CURRENT - mA
10
V
CC
= 5 V
V
O
= 0.4 V
10
1
T
A
= 25˚C
T
A
= 85˚C
0
T
A
= 70˚C
T
A
= 25˚C
T
A
= 0˚C
T
A
= -40˚C
0
0.01
1
T
A
= -40˚C
0.1
0.1
1
10
0.1
1
10
100
IF - INPUT DIODE FORWARD CURRENT - mA
IF - INPUT DIODE FORWARD CURRENT - mA
8
Single-Channel: 6N138, 6N139 Dual-Channel: HCPL-2730, HCPL-2731 Rev. 1.0.0
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