Very Low Power Consumption High Gain Optocouplers

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This device is a very low power consumption high gain single channel optocoupler. It represents the single channel 8-pin DIP configuration and is pin compatible with the industry standard 6N139. Each channel can be driven with an input current as low as 40 uA and has a typical current transfer ratio of 3500%.

This high gain coupler uses an AlGaAs LED and an integrated high gain photodetector to provide an extremely high current transfer ratio between input and output. Separate pins for the photodiode and output stage results in TTL compatible saturation voltages and high speed operation. Where desired, the VCC and VO terminals may be tied together to achieve conventional Darlington operation.

This device is designed for use in CMOS, LSTTL and other low power applications. It is especially well suited for ISDN telephone interface and battery operated applications due to the low power consumption. A 700% minimum current transfer ratio is guaranteed from 0 degrees C to 70 degrees C operating temperature range at 40 uA of LED current and VCC >= 3 V.

The SO-8 does not require "through holes" in a PCB. This package occupies approximately one-third the footprint area of the standard dual-in-line package. The lead profile is designed to be compatible with standard surface mount processes.


  • Ultra Low Input Current Capability - 40 uA
  • Specified for 3 V Operation
    Typical power Consumption: <1 mW
    Input Power: <50 uW
    Output Power: <500uW
  • Will Operate with Vcc as Low as 1.6 V
  • High Current Transfer Ratio - 3500% at IF = 40 uA
  • TTL and CMOS Compatible Output
  • Specified AC and DC Performance over Temperature:
    0 degrees C to 70 degrees C
  • Safety Approval:
3750 V rms for 1 minute and 5000 V rms for 1 minute per UL1577 (Option 020)
CSA Approved
IEC/EN/DIN EN 60747-5-2 Approved with VIORM = 630 Vpeak (Option 060)
  • 8-Pin Product Compatible with 6N138/6N139 and HCPL-2730/HCPL-2731
  • Available in 8-Pin DIP and SOIC-8 Footprint
  • Through Hole and Surface Mount Assembly Available
  • Options available are:
020 = 5000 V rms/1 minute UL Rating Option
060 = VDE 0884 VIORM = 630 V peak Option
300 = Gull Wing Surface Mount Option
500 = Tape and Reel Packaging Option
XXXE = Lead Free Option


  • Battery Operated Applications
  • ISDN Telephone Interface
  • Ground Isolation between Logic Families - TTL, LSTTL, CMOS, HCMOS, HL-CMOS, LV-HCMOS
  • Low Input Current Line Receiver

Lifecycle Status



  • RoHS
    Pb & Pb-free options available

Lifecycle Status


Substance Compliance

  • RoHS
    Pb & Pb-free options available
Specification Value
Lifecycle Active
Distrib. Inventory Yes
Samples Available Yes
RoHS6 Compliant Pb & Pb-free options available
Max Qty of Samples 20
Product Type 100 KBd Darlington Transistor Output
Package 300mil DIP-8
VDD (V) 5
IF Min. (mA) 0.04
CTR Min. (%) 800.0
CTR Max. (%) 25000
Prop Delay (tPLH) Max. (µs) 90.0
Prop Delay (tPHL) Max. (µs) 25.0
CMR (min.) (V/µs) 1000.0
Vcm (V) 10.0
UL Insulation Rating Viso (VRMS) 5000.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 630


Application Brief (1) i
Application Note (5) i
Brochures (2) i
Data Sheet (1) i
Design Guide (1) i
FAQs (1) i
Obsolescence Notice (1) i
Options Data Sheet (5) i
Product Change Notice (PCN) (17) i
Regulatory Certificate (1) i
Selection Guide (2) i
White Papers (3) i