Very Low Power Consumption High Gain Optocouplers

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This device is a very low power consumption high gain dual channel optocoupler. It is the equivalent dual channel product of the single channel HCPL-070A in an SO-8 footprint. Each channel can be driven with an input current as low as 40 mA 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 0oC to 70oC operating temperature range at 40 mA 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: < 500 uW
  • 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: 0oC to 70oC
  • Safety Approval:
UL Recognized - 3750 V rms for 1 minute per UL1577
CSA Approved
  • 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:
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


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 SO8
VDD (V) 5
IF Min. (mA) 0.04
CTR Min. (%) 800.0
CTR Max. (%) 25000
Prop Delay (tPLH) Max. (µs) 130.0
Prop Delay (tPHL) Max. (µs) 25.0
CMR (min.) (V/µs) 1000.0
Vcm (V) 10.0
UL Insulation Rating Viso (VRMS) 3750.0

Application Brief1 i
Application Note5 i
Brochures2 i
Data Sheet1 i
Design Guide1 i
FAQs1 i
Obsolescence Notice1 i
Options Data Sheet6 i
Product Change Notice (PCN)14 i
Regulatory Certificate1 i
Reliability Data Sheet1 i
Selection Guide2 i
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