1MBd Dual-channel, Bi-directional R2Coupler® Optocoupler

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The Broadcom ACFL-5211T is an automotive grade dual-channel optocopler device designed for bi-directional digital communications. The device has two optocoupler channels internally aligned 180 degrees of each other, providing optimum chip pin-out configuration for bi-directional Tx/Rx data communication design and board layout. The two channels are electrically indepedent and galvanically isolated, providing an ideal isolated bi-directional power system communication interface.
The device is optimized for low power systems supporting data rates up to 1 MBd and packaged in a compact SSO-12 package comparable to the SSO-8 footprint.
Broadcom R2CouplerTM isolation products provide the reinforced insulation and reliability needed for critical automotive and high temperature industrial applications.


  • Automotive Qualified per AEC-Q100 Grade 1 Guidelines
  • Operating Temperature from -40 °C to +125 °C
  • 8mm Creepage and Clearance
  • Data Rates up to 1MBd
  • LED Current Drive (IF): 0.8 to 16mA
  • Low Propagation Delay: 1µs max at IF = 10mA
  • Vcc Range: 3 to 20 V
  • Compact, Auto-Insertable Stretched SO12 Package
  • Worldwide Safety Approval:
- UL 1577 approval, Viso = 5,000 Vrms for 1 min.
- CSA Component Acceptance Notice 5
- IEC 60747-5-5, EN/DIN EN 60747-5-2, Viorm = 1,140 Vpeak


  • Automotive IPM Driver for DC-DC Converters and Motor Inverters
  • Status Feedback and Wake-Up Signal Isolation
  • CANBus and SPI Communications Interface
  • High Temperature Digital/Analog Signal Isolation

Lifecycle Status


Substance Compliance

  • RoHS
    Pb & Pb-free options available
Specification Value
Lifecycle Active
Distrib. Inventory Yes
Product Type Automotive Optocoupler
CMR (min.) (V/µs) 15000.0
Vcm (V) 1500.0
CTR Max. (%) 100
CTR Min. (%) 32.0
IF Min. (mA) 10.0
RoHS6 Compliant Pb & Pb-free options available
Package Stretched SO12
UL Insulation Rating Viso (VRMS) 5000.0
IEC Maximum Working Insulation Voltage Viorm (VPEAK) 1140.0
Prop Delay (tPHL) Max. (µs) 1.0 µs
Prop Delay (tPLH) Max. (µs) 1.0 µs

Data Sheet1 i
Photocard1 i


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