DATA SHEET
www.onsemi.com
8-Pin DIP Low Input Current
High Gain Split Darlington
Optocouplers
PDIP8 6.6x3.81, 2.54P
CASE 646BW
8
1
Single-Channel: 6N138M,
6N139M
Dual-Channel: HCPL2730M,
HCPL2731M
PDIP8 9.655x6.6, 2.54P
CASE 646CQ
8
8
1
1
Description
The single−channel, 6N138M, 6N139M and dual−channel
HCPL2730M, HCPL2731M 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 and HCPL2731M, 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/ms.
PDIP8 GW
CASE 709AC
MARKING DIAGRAM
6N138
VXXYYB
6N138
V
= Device Number
= DIN EN/IEC60747−5−5 Option (only
appears on component ordered with
this option)
= Two−Digit Year Code, e.g., ‘16’
= Two−Digit Work Week, Ranging from
‘01’ to ‘53’
XX
YY
Features
• Low Current – 0.5 mA
• Superior CTR – 2000%
B
= Assembly Package Code
• Superior CMR – 10 kV/ms
• CTR Guaranteed 0 to 70°C
• Dual Channel – HCPL2730M, HCPL2731M
• Safety and Regulatory Approvals
ORDERING INFORMATION
See detailed ordering and shipping information on page 11 of
this data sheet.
• UL1577, 5,000 VAC
for 1 Minute
RMS
• DIN EN/IEC60747−5−5
• These are Pb−Free Devices
Applications
Related Resources
• Digital Logic Ground Isolation
• Telephone Ring Detector
• EIA−RS−232C Line Receiver
• High Common Mode Noise Line Receiver
• mP Bus Isolation
• https://www.onsemi.com/products/interfaces/
high−performance−optocouplers/high−per-
formance−transistor−optocouplers
• https://www.onsemi.com/products/interfaces/
high−performance−optocouplers/high−per-
formance−transistor−optocouplers/hcpl0700
• Current Loop Receiver
• https://www.onsemi.com/products/interfaces/
high−performance−optocouplers/high−per-
formance−transistor−optocouplers/hcpl0731
© Semiconductor Components Industries, LLC, 2009
1
Publication Order Number:
October, 2022 − Rev. 2
HCPL2731/D