Broadcom ACNU-250L High-Speed Optocouplers

Broadcom ACNU-250L High-Speed Optocouplers are single-channel 1MBd optocouplers in an SSO8 footprint. These optocouplers feature an insulating layer between the light-emitting diode and an integrated photon detector to provide electrical insulation between input and output. The separate connection for the photodiode bias and output transistor collector reduces the base-collector capacitance. This also increases the data speed to 100x compared to a conventional photo-transistor coupler. Other features include open-collector output, high-insulation voltage of 1414Vpeak, wide supply voltage range of 3V to 24V, 11mm creepage, and 10.5mm clearance. Broadcom ACNU-250L High-Speed Optocouplers are ideal for isolated communication logic interface and control in high-voltage power systems, space-constrained industrial applications, renewable inverters, and medical equipment.


  • 11mm creepage and 10.5mm clearance in a compact SSO8 package
  • 1Mb/s high-speed
  • 3V to 24V wide supply voltage range
  • TTL compatible
  • Open-collector output
  • 0.5mm internal clearance (DTI)
  • 40kV/µs minimum common-mode rejection at VCM=1500V
  • -40°C to +105°C operating temperature range
  • Worldwide safety approvals
    • UL 1577 recognized and 5000Vrms/1 minute
    • CSA approval
    • IEC/EN 60747-5-5 approval for reinforced insulation


  • Communications interface
  • Feedback elements in switching power supplies
  • Digital signal isolation for A/D and D/A conversion
  • High-voltage power systems
  • MCU interface
  • Renewable energy inverters
  • Medical imaging and patient monitoring

Functional Diagram

Block Diagram - Broadcom ACNU-250L High-Speed Optocouplers
Publicado: 2019-12-05 | Actualizado: 2023-06-22