6N138M, 6N139M, HCPL2730M, HCPL2731M — Low Input Current High Gain Split Darlington Optocouplers
December 2009
Single-Channel: 6N138M, 6N139M
Dual-Channel: HCPL2730M, HCPL2731M (Preliminary)
Low Input Current High Gain Split
Darlington Optocouplers
Features
■
Low current – 0.5mA
■
Superior CTR-2000%
■
Superior CMR-10kV/µs
■
CTR guaranteed 0–70°C
■
U.L. recognized (File # E90700, Vol. 2)
■
VDE recognition (pending)
Description
The 6N138M/9M and HCPL2730M/31M 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, HCPL2730M/HCPL2731M, an inte-
grated emitter-base resistor provides superior stability
over temperature.
The combination of a very low input current of 0.5mA
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 compati-
bility is ensured to CMOS as well as high fan-out TTL
requirements. An internal noise shield provides excep-
tional common mode rejection of 10 kV/µs.
– Ordering option V, e.g., 6N138VM
■
Dual Channel – HCPL2730M, HCPL2731M
(coming soon)
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
Related Resources
■
www.fairchildsemi.com/products/opto/
■
www.fairchildsemi.com/pf/HC/HCPL0700.html
■
www.fairchildsemi.com/pf/HC/HCPL0730.html
■
www.fairchildsemi.com/pf/HC/HCPL0731.html
Schematic
N/C 1
8 V
CC
+ 1
V
F1
+ 2
V
F
Package Outlines
8 V
CC
8
8
1
1
7 V
B
_ 2
7 V
01
_
3
6 V
O
_
V
3
6 V
02
8
8
1
1
F2
N/C 4
5 GND
+ 4
5 GND
6N138M / 6N139M
HCPL2730M / HCPL2731M
www.fairchildsemi.com
©2009 Fairchild Semiconductor Corporation
6N138M, 6N139M, HCPL2730M, HCPL2731M Rev. 1.0.2
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
