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ISO1044

ACTIVE

Isolated CAN FD transceiver in small package

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Data sheet

ISO1044

ACTIVE
Data sheet Order now

Product details

Rating Catalog Isolation rating Basic Data rate (max) (Mbps) 5 Working isolation voltage (VIOWM) (Vrms) 459 Surge isolation voltage (VIOSM) (VPK) 5000, 8000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 3000 CMTI (min) (kV/µs) 85 Supply voltage (V) 1.71 to 5.5, 4.5 to 5.5 Bus fault voltage (V) -58 to 58 Common-mode voltage (V) -12 to 12 Operating temperature range (°C) -40 to 125
Rating Catalog Isolation rating Basic Data rate (max) (Mbps) 5 Working isolation voltage (VIOWM) (Vrms) 459 Surge isolation voltage (VIOSM) (VPK) 5000, 8000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 3000 CMTI (min) (kV/µs) 85 Supply voltage (V) 1.71 to 5.5, 4.5 to 5.5 Bus fault voltage (V) -58 to 58 Common-mode voltage (V) -12 to 12 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 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
  • 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

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.

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
* Data sheet ISO1044 Isolated CAN FD Transceiver in Small Package datasheet (Rev. A) 15 Jul 2020
Certificate CSA Certificate for ISO1044BD 16 Mar 2023
Certificate CQC Certificate for ISOxxD (Rev. A) 07 Feb 2023
More literature Isolating a CAN Bus (Rev. A) PDF | HTML 13 Jan 2023
Certificate TUV Certificate for Isolation Devices (Rev. K) 05 Aug 2022
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. P) 05 Aug 2022
Application note Isolate Your CAN Systems Without Compromising on Performance or Space (Rev. F) PDF | HTML 04 Aug 2022
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. R) 12 Jul 2022
Application note How to Design an Isolated CAN Port for Space-Constrained Industrial Applications (Rev. A) PDF | HTML 06 Jul 2022
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 16 Nov 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
Application note How to Isolate Signal and Power in Isolated CAN Systems (Rev. C) PDF | HTML 25 May 2021
Application note Top Design Questions about Isolating CAN Nodes Bus Design (Rev. A) PDF | HTML 19 May 2021
Application note Isolated CAN Reference Design (Rev. E) 22 Jul 2020
User guide ISO1044DEVM Isolated CAN Evaluation Module PDF | HTML 20 Mar 2020
Technical article The hidden cost of optocouplers for isolated RS-485 and CAN designs 28 Jan 2019
Technical article Now that you have isolated your CAN signals, what about power? 09 Jan 2019
Technical article Reduce emissions and drive up immunity in your isolated CAN systems 07 Nov 2018

Design & development

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Evaluation board

ISO1044DEVM — ISO1044 isolated CAN transceiver evaluation module

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.
User guide: PDF | HTML
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Simulation model

ISO1044BD IBIS Model

SLLM450.ZIP (81 KB) - IBIS Model
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SOIC (D) 8 View options
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