LOW INPUT CURRENT
HIGH GAIN SPLIT
DARLINGTON OPTOCOUPLERS
SINGLE-CHANNEL
6N138
DUAL-CHANNEL
HCPL-2730
6N139
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.
8
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.
1
The combination of a very low input current of 0.5 mA and a high current transfer
ratio of 2000% makes this family particularly useful 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.
8
8
1
1
An internal noise shield provides exceptional common mode rejection of 10 kV/µs.
An improved package allows superior insulation permitting a 480 V working voltage
compared to industry standard 220 V.
VCC
+
1
8
VCC
N/C
1
8
FEATURES
APPLICATIONS
VF1
_
• Low current - 0.5 mA
• Digital logic ground isolation
• Telephone ring detector
• EIA-RS-232C line receiver
• High common mode noise line receiver
• µP bus isolation
V01
2
3
7
6
5
+
VB
2
3
4
7
6
5
• Superior CTR-2000%
VF
_
• Superior CMR-10 kV/µs
• Double working voltage-480V RMS
• CTR guaranteed 0-70°C
• U.L. recognized (File # E90700)
• Dual Channel - HCPL-2730
HCPL-2731
_
V02
VO
VF2
GND
+
GND
4
N/C
• Current loop receiver
HCPL-2730 / HCPL-2731
6N138 / 6N139
ABSOLUTE MAXIMUM RATINGS (No derating required up to 85°C)
Parameter
Symbol
TSTG
Value
Units
°C
Storage Temperature
Operating Temperature
Lead Solder Temperature
EMITTER
-55 to +125
-40 to +85
TOPR
°C
TSOL
260 for 10 sec
°C
Each Channel
IF (avg)
IF (pk)
20
40
mA
mA
A
DC/Average Forward Input Current
Peak Forward Input Current (50% duty cycle, 1 ms P.W.) Each Channel
Peak Transient Input Current - (!"1 µs P.W., 300 pps)
IF (trans)
1.0
Reverse Input Voltage
Input Power Dissipation
DETECTOR
Each Channel
Each Channel
VR
PD
5
V
35
mW
Average Output Current
Emitter-Base Reverse Voltage
Each Channel
(6N138 and 6N139)
(6N138, HCPL-2730)
(6N139, HCPL-2731)
Each Channel
IO (avg)
VEB
60
0.5
mA
V
-0.5 to 7
-0.5 to 18
100
Supply Voltage, Output Voltage
Output power dissipation
VCC, VO
PD
V
mW
12/27/99
200023A