Broadcom ACNT-H50L 1MBd Optocoupler

Broadcom ACNT-H50L 1MBd Optocoupler uses an insulating layer between the light-emitting diode and an integrated photon detector to provide electrical insulation between input and output. Separate connections for the photodiode bias and output transistor collector increase the speed up to a hundred times over that of a conventional photo-transistor coupler by reducing the base-collector capacitance.


  • 1Mb/s high speed 
  • TTL compatible
  • 15mm stretched SO8 package package
  • Open-collector output
  • 15kV/μs minimum common-mode rejection at VCM = 1500V
  • Guaranteed performance within a temperature range of –40°C to +105°C
  • Worldwide safety approval
    • UL1577 recognized: 7500Vrms for 1 minute
    • CSA approval
    • IEC 60747-5-5 approval for reinforced insulation


  • High voltage power systems, e.g., 690VAC drives
  • Renewable energy inverters
  • Feedback elements in switching power supplies
  • Digital isolation for A/D, D/A conversion digital field
  • Communications interface
  • MCU interface

Block Diagram

Block Diagram - Broadcom ACNT-H50L 1MBd Optocoupler

Broadcom 15 mm Wide ACNT Optocouplers for High Voltage Applications

Broadcom ACNT optocouplers family offers 15mm creepage and 14.2mm clearance for high voltage isolation applications. These optocouplers provide 2,262 VPEAK working insulation voltage and 12,000 VPEAK transient overvoltage in a compact stretched surface mount SO-8 package. The ACNT optocouplers consist of comprehensive product types to meet the different galvanic isolation requirements and features. These devices are the ACNT-H343 gate drive optocoupler, ACNT-H61L low power 10MBd digital optocoupler, ACNT-H790/H79A/H79B high linearity isolation amplifier for current sensing, ACNT-H870/H87A/H87B voltage sense, and ACNT-H50L/H511 low-speed analog optocoupler.

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Published: 2016-02-09 | Updated: 2023-01-24