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onsemi HCPL2731 Dual-Channel Optocouplers

onsemi HCPL2731 dual-channel optocouplers feature 0.5mA input current and 2000% current transfer ratio (CTR). onsemi HCPL2731 consists of an aluminum gallium arsenide (AlGaAs) LED optically coupled to a high gain split darlington photodetector. This split darlington configuration permits lower output saturation voltage and higher speed operation than is possible with a conventional darlington phototransistor optocoupler. onsemi HCPL2731 dual-channel optocouplers provide superior stability over temperature through an integrated emitter-base resistor. Applications include digital logic ground isolation, EIA-RS-232C line receiver, and more.

Features

  • Dual channel
  • 0.5mA input current
  • 2000% current transfer ratio (CTR)
  • 10kV/µs common mode rejection (CMR)
  • 0 to +70°C operating temperature range
  • UL recognized (File #E90700)

Applications

  • Digital logic ground isolation
  • Telephone ring detectors
  • EIA-RS-232C line receivers
  • High common-mode noise line receivers
  • Microprocessor bus isolation
  • Current loop receivers
Published: 2016-03-29 | Updated: 2022-03-11