Single-Channel: 6N138, 6N139 Dual-Channel: HCPL-2730, HCPL-2731 Low Input Current High Gain Split Darlington Optocouplers
Fig. 4 LED Forward Current vs. Forward Voltage
100
1.5
Fig. 5 LED Forward Voltage vs. Temperature
I
F
= 1.6 mA
FORWARD CURRENT - I
F
(mA)
FORWARD VOLTAGE - V
F
(V)
T
A
= 25˚C
T
A
= -40˚C
1.2
1.3
1.4
1.5
1.6
10
T
A
= 85˚C
1.4
1
T
A
= 70˚C
1.3
0.1
1.2
0.01
T
A
= 0˚C
0.001
1.0
1.1
1.1
-40
-20
0
20
40
60
80
100
FORWARD VOLTAGE - V
F
(V)
TEMPERATURE - T
A
(˚C)
Fig. 6 Non-saturated Rise and Fall Times vs.
Load Resistance (6N138 / 6N139 Only)
100
T
A
= 25˚C
Fig. 7 Non-saturated Rise and Fall Times vs.
Load Resistance (HCPL-2730 / HCPL-2731 Only)
T
A
= 25˚C
t
f
10
t
f
TIME, T (µs)
10
TIME -
µs
t
r
tr
1
I
F
ADJUSTED FOR V
OL
= 2 V
1
0.1
1
10
0.1
1
10
R
L
- LOAD RESISTANCE (kΩ)
R
L
- LOAD RESISTANCE (kΩ)
Fig. 8 Propagation Delay To Logic Low
vs. Base-Emitter Resistance
(HCPL-2730 / HCPL-2731 Only)
T
PHL
- PROPAGATION DELAY TO LOGIC LOW - (µs)
6
I
F
= 1.6 mA, V
CC
= 5 V
R
L
= 2.2 K, T
A
= 25°C
Normalized to R
BE
= None
Fig. 9 Current Transfer Ratio vs. Forward Current
(6N138 / 6N139 Only)
1600
V
CC
= 5 V
V
O
= 0.4 V
5
4
CURRENT TRANSFER RATIO - CTR (%)
1200
3
T
A
= 85˚C
800
2
T
A
= 70˚C
400
T
A
= -40˚C
0
0.01
0.1
1
10
T
A
= 25˚C
T
A
= 0˚C
1
0
0.01
0.1
1
10
RBE - BASE-EMITTER RESISTANCE - M
Ω
I
F
- FORWARD CURRENT - mA
7
Single-Channel: 6N138, 6N139 Dual-Channel: HCPL-2730, HCPL-2731 Rev. 1.0.0
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