Isolated CAN FD transceiver in small package


Product details


Rating Catalog Isolation rating (Vrms) 3000 Data rate (Max) (Mbps) 5 Operating temperature range (C) -40 to 125 Supply voltage (V) 4.5 to 5.5, 1.71 to 5.5 Surge voltage capability (Vpk) 5000 Bus fault voltage (V) -58 to 58 Common mode voltage (V) -12 to 12 ESD HBM (kV) 10 open-in-new Find other Isolated CAN transceivers

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SOIC (D) 8 open-in-new Find other Isolated CAN transceivers


  • Meets the ISO 11898-2:2016 physical layer standard
  • Supports classic CAN up to 1 Mbps and FD (flexible data rate) up to 5 Mbps
  • Protection features
    • DC Bus Fault Protection Voltage: ±58 V
    • IEC ESD tolerance on bus pins: ±8 kV
    • HBM ESD tolerance on bus pins: ±10 kV
    • Driver dominant time out (TXD DTO)
    • Undervoltage protection on VCC1 and VCC2
  • Common-mode voltage range: ±12 V
  • Ideal passive, high impedance bus terminals when unpowered
  • High CMTI: 85 kV/µs minimum
  • VCC1 voltage range: 1.71 V to 5.5 V
    • Supports 1.8-V, 2.5-V, 3.3-V and 5.0-V logic interface to the CAN controller
  • VCC2 voltage range: 4.5 V to 5.5 V
  • Robust electromagnetic compatibility (EMC)
    • System-Level ESD, EFT, and surge Immunity
    • Low Emissions
  • Ambient temperature range: –40°C to +125°C
  • 8-SOIC package
  • Safety-related certifications:
    • All certifications planned
    • VDE reinforced insulation per DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • IEC 60950-1, IEC 62368-1, IEC 61010-1 and GB 4943.1-2011 certifications

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The ISO1044B device is a galvanically-isolated controller area network (CAN) transceiver that meets the specifications of the ISO11898-2 (2016) standard. The ISO1044B device offers ±58-V DC bus fault protection and ±12-V common-mode voltage range. The device supports up to 5-Mbps data rate in CAN FD mode allowing much faster transfer of payload compared to classic CAN. This device uses a silicon dioxide (SiO2) insulation barrier with a withstand voltage of 3000 VRMS and a working voltage of 450 VRMS. Electromagnetic compatibility has been significantly enhanced to enable system-level ESD, EFT, surge, and emissions compliance. Used in conjunction with isolated power supplies, the device protects against high voltage, and prevents noise currents from the bus from entering the local ground. The ISO1044B device supports a wide ambient temperature range of –40°C to +125°C. The device is available in the small SOIC-8 (D) package which significantly reduces the solution size compared to a traditional approach using optocouplers to isolate the CAN transceiver.

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Technical documentation

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Type Title Date
* Datasheet ISO1044 Isolated CAN FD Transceiver in Small Package datasheet (Rev. A) Jul. 15, 2020
Application notes How to Isolate Signal and Power in Isolated CAN Systems (Rev. B) Oct. 08, 2020
Application notes Isolated CAN Reference Design (Rev. E) Jul. 22, 2020
Application notes Top Design Questions about Isolating CAN Nodes Apr. 24, 2020
Application notes How to Design an Isolated CAN Port for Space-Constrained Industrial Applications Apr. 08, 2020
Application notes Isolate your CAN systems without compromising on performance or space (Rev. D) Apr. 06, 2020
User guides ISO1044DEVM Isolated CAN Evaluation Module Mar. 20, 2020
Technical articles The hidden cost of optocouplers for isolated RS-485 and CAN designs Jan. 28, 2019
Technical articles Now that you have isolated your CAN signals, what about power? Jan. 09, 2019
Technical articles Reduce emissions and drive up immunity in your isolated CAN systems Nov. 07, 2018

Design & development

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Hardware development

document-generic User guide
ISO1044DEVM is an evaluation module used to evaluate the small package, basic isolation, high speed, robust EMC isolated CAN transceiver in the SOIC-8D package. The EVM features enough test points and jumper options to evaluate the device with minimal external components.
  • Basic isolation (3kVrms), high speed, robust EMC isolated CAN
  • Wide supply and level translation range: 1.71 V to 5.5 V
  • High signaling rate: CAN FD up to 5 Mbps
  • Isolation barrier life > 25 years
  • Small SOIC-8D package

Design tools & simulation

SLLM450.ZIP (81 KB) - IBIS Model

CAD/CAE symbols

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