High Speed CMOS Optocoupler

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The HCPL-0738 is a dual-channel 15 MBd CMOS high speed optocoupler in an SOIC-8 package. The HCPL-0738 optocoupler utilizes the latest CMOS IC technology to achieve outstanding performance with very low power consumption. Basic building blocks of HCPL-0738 are high speed LEDs and CMOS detector ICs.

Broadcom also offers the same performance in the single channel version, HCPL-0708. Each detector incorporates an integrated photodiode, a high speed transimpedance amplifier, and a voltage comparator with an output driver.



  • 15 ns typical pulse width distortion
  • 40 ns maximum prop. delay skew
  • 20 ns typical prop. delay
  • High speed: 15 MBd
  • 5 V CMOS compatibility
  • 10 kV/uS minimum common mode rejection
  • -40 to 100 degree C temperature range
  • Safety and regulatory approvals:
UL recognized (3750 V rms for 1 minute per UL 1577)
CSA component acceptance notice #5.
IEC/EN/DIN EN 60747-5-2 approved for HCPL-0738 Option 060
  • Options available are:
060 = IEC/EN/DIN EN 60747-5-2 Option
500 = Tape and Reel Packaging Option
XXXE = Lead Free Option


  • PDP (plasma display panel)
  • Digital field bus isolation:
    DeviceNet, SDS, Profibus
  • Multiplexed data transmission
  • Computer peripheral interface
  • Microprocessor system interface
  • DC/DC converter

Lifecycle Status


Replacement Part

Substance Compliance

  • RoHS
    Pb & Pb-free options available
Specification Value
Lifecycle Obsolete
Distrib. Inventory Yes
CMR (min.) (V/µs) 10000.0
Vcm (V) 1000.0
RoHS6 Compliant Pb & Pb-free options available
Package SO8
IF Min. (mA) 10.0
Product Type High Speed CMOS Logic Gate
Prop Delay (tPHL) Max. (µs) 60.0
Prop Delay (tPLH) Max. (µs) 60.0
PWD (max.) 30
VDD (V) 5
UL Insulation Rating Viso (VRMS) 3750.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 560
Data Rate 15
Application Brief1 i
Application Note6 i
Brochures2 i
Design Guide1 i
FAQs2 i
Obsolescence Notice1 i
Options Data Sheet6 i
Product Change Notice (PCN)16 i
Promotional Material2 i
Regulatory Certificate1 i
Reliability Data Sheet3 i
Selection Guide2 i
Technical Notes1 i
White Papers4 i


3.3V/5V High Speed Digital CMOS Optocoupler