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is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.Single-Channel: 6N138, 6N139 Dual-Channel: HCPL2730, HCPL2731 Low Input Current High Gain Split Darlington Optocouplers
August 2008
Single-Channel: 6N138, 6N139
Dual-Channel: HCPL2730, HCPL2731
Low Input Current High Gain Split
Darlington Optocouplers
Features Description
Low current 0.5mA The 6N138/9 and HCPL2730/HCPL2731 optocouplers
consist of an AlGaAs LED optically coupled to a high
Superior CTR-2000%
gain split darlington photodetector.
Superior CMR-10kV/s
The split darlington conguration separating the input
CTR guaranteed 070C
photodiode and the rst stage gain from the output
U.L. recognized (File # E90700)
transistor permits lower output saturation voltage and
VDE recognized (File # 120915) Ordering option V,
higher speed operation than possible with conventional
e.g., 6N138V
darlington phototransistor optocoupler. In the dual
Dual Channel HCPL2730, HCPL2731
channel devices, HCPL2730/HCPL2731, an integrated
emitter-base resistor provides superior stability over
Applications
temperature.
Digital logic ground isolation
The combination of a very low input current of 0.5mA
Telephone ring detector
and a high current transfer ratio of 2000% makes this
EIA-RS-232C line receiver family particularly useful for input interface to MOS,
CMOS, LSTTL and EIA RS232C, while output compati-
High common mode noise line receiver
bility is ensured to CMOS as well as high fan-out TTL
P bus isolation
requirements. An internal noise shield provides excep-
Current loop receiver
tional common mode rejection of 10 kV/s.
Schematic Package Outlines
V V
N/C 1 8 + 1 8
CC CC
8
V
F1 1
_
V
+ 2 7 2 7 V
B
01
V
F
_ _
3 6 V 3 6 V
O
02
8
8
V
F2
1
1
4 5 GND GND
N/C
+ 4 5
6N138 / 6N139
HCPL2730 / HCPL2731
2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
6N138, 5N139, NCPL2730, HCPL2731 Rev. 1.0.5