FEATURES
• Low current - 0.5 mA
Superior CTR-2000%
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
LOW INPUT CURRENT
HIGH GAIN SPLIT
DARLINGTON OPTOCOUPLERS
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 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.
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.
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
Parameter Symbol Value Units
Storage Temperature T
STG
-55 to +125 °C
Operating Temperature T
OPR
-40 to +85 °C
Lead Solder Temperature TSOL 260 for 10 sec °C
EMITTER
Each Channel IF (avg) 20 mA
DC/Average Forward Input Current
Peak Forward Input Current (50% duty cycle, 1 ms P.W.) Each Channel I
F
(pk) 40 mA
Peak Transient Input Current - (!"1 µs P.W., 300 pps) I
F
(trans) 1.0 A
Reverse Input Voltage Each Channel V
R
5V
Input Power Dissipation Each Channel PD 35 mW
DETECTOR
Average Output Current Each Channel I
O
(avg) 60 mA
Emitter-Base Reverse Voltage (6N138 and 6N139) V
EB
0.5 V
Supply Voltage, Output Voltage
(6N138, HCPL-2730)
V
CC
, V
O
-0.5 to 7
V
(6N139, HCPL-2731) -0.5 to 18
Output power dissipation Each Channel P
D
100 mW
ABSOLUTE MAXIMUM RATINGS (No derating required up to 85°C)
8
1
8
1
8
1
SINGLE-CHANNEL DUAL-CHANNEL
6N138 HCPL-2730
6N139 HCPL-2731
1
2
3
4 5
6
7
8
+
_
V
F
V
CC
V
B
V
O
GND
6N138 / 6N139
N/C
N/C
1
2
3
4 5
6
7
8+
_
V
F1
V
CC
V
01
V
02
GND
HCPL-2730 / HCPL-2731
V
F2
_
+
12/27/99 200023A