LOW INPUT CURRENT
HIGH GAIN SPLIT
DARLINGTON OPTOCOUPLERS
SINGLE-CHANNEL: 6N138
DUAL-CHANNEL:
HCPL-2730
PACKAGE
6N139
HCPL-2731
SCHEMATIC
N/C 1
8
1
+ 2
V
F
_
3
8 V
CC
+ 1
V
F1
8 V
CC
7 V
B
_ 2
7 V
01
6 V
O
_
V
F2
3
6 V
02
N/C 4
5 GND
+ 4
5 GND
8
1
8
1
6N138 / 6N139
HCPL-2730 / HCPL-2731
DESCRIPTION
The 6N138/9 and HCPL-2730/HCPL-2731 optocouplers consist of an AlGaAs LED optically coupled to a high gain split darlington
photodetector.
The split darlington configuration separating the input photodiode and the first stage gain from the output transistor permits lower
output saturation voltage and higher speed operation than possible with conventional darlington phototransistor optocoupler. In the
dual channel devices, HCPL-2730/HCPL2731, an integrated emitter - base resistor provides superior stability over temperature.
The combination of a very low input current of 0.5 mA and a high current transfer ratio of 2000% makes this family particularly use-
ful for input interface to MOS, CMOS, LSTTL and EIA RS232C, while output compatibility is ensured to CMOS as well as high fan-
out TTL requirements. An internal noise shield provides exceptional common mode rejection of 10 kV/µs.
FEATURES
•
•
•
•
•
•
•
•
Low current - 0.5 mA
Superior CTR-2000%
Superior CMR-10 kV/µs
CTR guaranteed 0-70°C
U.L. recognized (File # E90700)
VDE recognized (File # 120915) Ordering option V, e.g., 6N138V
Dual Channel - HCPL-2730
HCPL-2731
APPLICATIONS
•
•
•
•
•
•
Digital logic ground isolation
Telephone ring detector
EIA-RS-232C line receiver
High common mode noise line receiver
µP bus isolation
Current loop receiver
© 2003 Fairchild Semiconductor Corporation
Page 1 of 16
11/2/04
LOW INPUT CURRENT
HIGH GAIN SPLIT
DARLINGTON OPTOCOUPLERS
SINGLE-CHANNEL: 6N138
DUAL-CHANNEL:
HCPL-2730
6N139
HCPL-2731
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25°C unless otherwise specified)
Parameter
Storage Temperature
Operating Temperature
Lead Solder Temperature (Wave solder only. See recommended reflow profile graph for
SMD mounting)
EMITTER
DC/Average Forward Input Current
Peak Forward Input Current (50% duty cycle, 1 ms P.W.)
Peak Transient Input Current - (
≤
1 µs P.W., 300 pps)
Reverse Input Voltage
Input Power Dissipation
DETECTOR
Average Output Current
Emitter-Base Reverse Voltage
Supply Voltage, Output Voltage
Output Power Dissipation
Each Channel
(6N138 and 6N139)
(6N138, HCPL-2730)
(6N139, HCPL-2731)
Each Channel
I
O
(avg)
V
ER
V
CC
, V
O
P
O
60
0.5
-0.5 to 7
-0.5 to 18
100
mA
V
V
mW
Each Channel
Each Channel
Each Channel
Each Channel
I
F
(avg)
I
F
(pk)
I
F
(trans)
V
R
P
D
20
40
1.0
5
35
mA
mA
A
V
mW
Symbol
T
STG
T
OPR
T
SOL
Value
-55 to +125
-40 to +85
260 for 10 sec
Units
°C
°C
°C
© 2003 Fairchild Semiconductor Corporation
Page 2 of 16
11/2/04
LOW INPUT CURRENT
HIGH GAIN SPLIT
DARLINGTON OPTOCOUPLERS
SINGLE-CHANNEL: 6N138
DUAL-CHANNEL:
HCPL-2730
6N139
HCPL-2731
ELECTRICAL CHARACTERISTICS
(T
A
= 0 to 70°C Unless otherwise specified)
INDIVIDUAL COMPONENT CHARACTERISTICS
Parameter
EMITTER
Input Forward Voltage
Input Reverse Breakdown Voltage
Temperature coefficient of forward voltage
DETECTOR
(I
F
= 0 mA, V
O
= V
CC
= 18 V)
Logic high output current
Each Channel
(I
F
= 0 mA, V
O
= V
CC
= 7 V)
Each Channel
(I
F
= 1.6 mA, V
O
= Open)
(V
CC
= 18 V)
(I
F1
= I
F2
= 1.6 mA, V
CC
= 18 V)
(V
O1
- V
O2
= Open, V
CC
= 7 V
(I
F
= 0 mA, V
O
= Open,
V
CC
= 18 V)
(I
F1
= I
F2
= 0 mA, V
CC
= 18 V)
(V
O1
- V
O2
= Open, V
CC
= 7 V
** All Typicals at T
A
= 25°C
I
OH
6N139
HCPL-2731
6N138
HCPL-2730
6N138
6N139
I
CCL
HCPL-2731
HCPL-2730
6N135
6N136
I
CCH
HCPL-2731
HCPL-2730
0.01
0.01
0.4
1.3
0.05
0.10
100
µA
250
1.5
mA
3
10
µA
20
Test Conditions
T
A
=25°C
Each channel (I
F
= 1.6 mA)
(T
A
= 25°C, I
R
= 10 µA)
Each Channel
(I
F
= 1.6 mA)
Symbol
V
F
BV
R
(
∆
V
F
/
∆
T
A
)
Device
All
All
All
5.0
Min
Typ** Max
1.30
1.7
1.75
20
-1.8
Unit
V
V
mV/°C
Logic low supply
Logic high supply
© 2003 Fairchild Semiconductor Corporation
Page 3 of 16
11/2/04
LOW INPUT CURRENT
HIGH GAIN SPLIT
DARLINGTON OPTOCOUPLERS
SINGLE-CHANNEL: 6N138
DUAL-CHANNEL:
HCPL-2730
6N139
HCPL-2731
TRANSFER CHARACTERISTICS
(T
A
= 0 to 70°C Unless otherwise specified)
Parameter
COUPLED
Test Conditions
(I
F
= 0.5 mA, V
O
= 0.4 V, V
CC
= 4.5 V)
Each Channel
Current transfer ratio
(Note 1, 2)
(I
F
= 1.6 mA, V
O
= 0.4 V, V
CC
= 4.5 V)
Each Channel
(I
F
= 1.6 mA, V
O
= 0.4 V, V
CC
= 4.5 V)
Each Channel
(I
F
= 0.5 mA, I
O
= 2 mA, V
CC
= 4.5 V)
(I
F
= 1.6 mA, I
O
= 8 mA, V
CC
= 4.5 V)
Each Channel
Logic low output voltage
output voltage (Note 2)
(I
F
= 0.5 mA, I
O
= 15 mA, V
CC
= 4.5 V)
Each Channel
(I
F
= 12 mA, I
O
= 24 mA, V
CC
= 4.5 V)
Each Channel
(I
F
= 1.6 mA, I
O
= 4.8 mA, V
CC
= 4.5 V)
Each Channel
** All Typicals at T
A
= 25°C
V
OL
CTR
Symbol
Device
6N139
HCPL-2731
6N139
HCPL-2731
6N138
HCPL-2730
6N139
6N139
HCPL-2731
6N139
HCPL-2731
6N139
HCPL-2731
6N138
HCPL-2730
Min
400
500
300
Typ**
1100
3500
1300
2500
1300
2500
0.08
0.01
0.13
0.20
0.10
0.4
0.4
0.4
0.4
0.4
Max
Unit
%
%
%
V
© 2003 Fairchild Semiconductor Corporation
Page 4 of 16
11/2/04
LOW INPUT CURRENT
HIGH GAIN SPLIT
DARLINGTON OPTOCOUPLERS
SINGLE-CHANNEL: 6N138
DUAL-CHANNEL:
HCPL-2730
6N139
HCPL-2731
SWITCHING CHARACTERISTICS
(T
A
= 0 to 70°C unless otherwise specified., V
CC
= 5 V)
Parameter
Test Conditions Symbol
(R
L
= 4.7 k
Ω
, I
F
= 0.5 mA)
T
A
= 25°C
(R
L
= 4.7 k
Ω
, I
F
= 0.5 mA)
Each Channel
Propagation delay
time to logic low
(Note 2) (Fig. 22)
T
A
= 25°C
T
A
= 25°C
(R
L
= 270
Ω,
I
F
= 12 mA)
Each Channel
T
A
= 25°C
T
A
= 25°C
(R
L
= 2.2 kΩ, I
F
= 1.6 mA)
Each Channel
T
A
= 25°C
Each Channel
(R
L
= 4.7 kΩ, I
F
= 0.5 mA) T
A
= 25°C
Each Channel
(R
L
= 270
Ω,
I
F
= 12 mA)
Propagation delay
time to logic high
(Note 2) (Fig. 22)
T
A
= 25°C
(R
L
= 270
Ω,
I
F
= 12 mA) Each Channel
T
A
= 25°C
(R
L
= 2.2 kΩ, I
F
= 1.6 mA)
Each Channel
(R
L
= 2.2 kΩ, I
F
= 1.6 mA) T
A
= 25°C
Each Channel
Common mode
transient immu-
nity at logic high
Common mode
transient immu-
nity at logic low
** All Typicals at T
A
= 25°C
(I
F
= 0 mA, |V
CM
| = 10 V
P-P
)
T
A
= 25°C, (R
L
= 2.2 kΩ) (Note 3) (Fig. 23)
Each Channel
(I
F
= 1.6 mA, |V
CM
| = 10 V
P-P
, R
L
= 2.2 kΩ)
T
A
= 25°C, (Note 3) (Fig. 23)
Each Channel
T
PLH
(R
L
= 4.7 kΩ, I
F
= 0.5 mA)
(R
L
= 2.2 kΩ, I
F
= 1.6 mA)
(R
L
= 270
Ω,
I
F
= 12 mA)
T
PHL
Device
6N139
HCPL-2731
6N139
HCPL-2730
HCPL-2731
6N138
HCPL-2731
HCPL-2730
6N139
HCPL-2731
6N139
HCPL-2731
6N139
HCPL-2730
HCPL-2731
6N138
HCPL-2730/1
6N138
HCPL-2730/1
6N138
6N139
HCPL-2730
HCPL-2731
6N138
6N139
HCPL-2730
HCPL-2731
7
16
12
22
1.3
5
0.3
1.5
1
Min
Typ**
Max
30
4
3
0.2
25
120
100
2
1
3
2
15
10
25
20
90
60
10
7
15
10
50
35
µs
µs
Unit
|CM
H
|
1,000
10,000
V/µs
|CM
L
|
1,000
10,000
V/µs
© 2003 Fairchild Semiconductor Corporation
Page 5 of 16
11/2/04
