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ISO1042-Q1

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Automotive, isolated CAN transceiver with 70-V bus fault protection & flexible data rate

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Data sheet

ISO1042-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Isolation rating Basic, Reinforced Data rate (max) (Mbps) 5 Working isolation voltage (VIOWM) (Vrms) 1060 Surge isolation voltage (VIOSM) (VPK) 6000, 10000 Transient isolation voltage (VIOTM) (VPK) 7071 Withstand isolation voltage (VISO) (Vrms) 5000 CMTI (min) (kV/µs) 85 Bus fault voltage (V) -70 to 70 Common-mode voltage (V) -30 to 30 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
Rating Automotive Isolation rating Basic, Reinforced Data rate (max) (Mbps) 5 Working isolation voltage (VIOWM) (Vrms) 1060 Surge isolation voltage (VIOSM) (VPK) 6000, 10000 Transient isolation voltage (VIOTM) (VPK) 7071 Withstand isolation voltage (VISO) (Vrms) 5000 CMTI (min) (kV/µs) 85 Bus fault voltage (V) -70 to 70 Common-mode voltage (V) -30 to 30 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
SOIC (DWV) 8 67.275 mm² (5.85 mm × 11.5 mm) SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 mm)
  • AEC Q100: Qualified for automotive applications
  • Grade 1: –40°C to 125°C ambient temperature
  • Functional Safety-Capable
  • 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
  • Low loop delay: 152 ns
  • Protection features
    • DC bus fault protection voltage: ±70 V
    • HBM ESD tolerance on bus pins: ±16 kV
    • Driver Dominant Time Out (TXD DTO)
    • Undervoltage protection on VCC1 and VCC2
  • Common-Mode Voltage Range: ±30 V
  • Ideal passive, high impedance bus terminals when unpowered
  • High CMTI: 100 kV/µs
  • 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
  • 16-SOIC and 8-SOIC package options
  • Industrial version available: ISO1042
  • Safety-related certifications:
    • 7071-VPK VIOTM and 1500-VPK VIORM (Reinforced and Basic Options) per DIN VDE V 0884-11:2017-01
    • 5000-VRMS Isolation for 1 Minute per UL 1577
    • CQC, TUV and CSA certifications
  • AEC Q100: Qualified for automotive applications
  • Grade 1: –40°C to 125°C ambient temperature
  • Functional Safety-Capable
  • 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
  • Low loop delay: 152 ns
  • Protection features
    • DC bus fault protection voltage: ±70 V
    • HBM ESD tolerance on bus pins: ±16 kV
    • Driver Dominant Time Out (TXD DTO)
    • Undervoltage protection on VCC1 and VCC2
  • Common-Mode Voltage Range: ±30 V
  • Ideal passive, high impedance bus terminals when unpowered
  • High CMTI: 100 kV/µs
  • 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
  • 16-SOIC and 8-SOIC package options
  • Industrial version available: ISO1042
  • Safety-related certifications:
    • 7071-VPK VIOTM and 1500-VPK VIORM (Reinforced and Basic Options) per DIN VDE V 0884-11:2017-01
    • 5000-VRMS Isolation for 1 Minute per UL 1577
    • CQC, TUV and CSA certifications

The ISO1042-Q1 device is a galvanically-isolated controller area network (CAN) transceiver that meets the specifications of the ISO11898-2 (2016) standard. The ISO1042-Q1 device offers ±70-V DC bus fault protection and ±30-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 5000 VRMS and a working voltage of 1060 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 ISO1042-Q1 device is available for both basic and reinforced isolation (see Reinforced and Basic Isolation Options). The ISO1042-Q1 device supports a wide ambient temperature range of –40°C to +125°C. The device is available in the SOIC-16 (DW) package and a smaller SOIC-8 (DWV) package.

The ISO1042-Q1 device is a galvanically-isolated controller area network (CAN) transceiver that meets the specifications of the ISO11898-2 (2016) standard. The ISO1042-Q1 device offers ±70-V DC bus fault protection and ±30-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 5000 VRMS and a working voltage of 1060 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 ISO1042-Q1 device is available for both basic and reinforced isolation (see Reinforced and Basic Isolation Options). The ISO1042-Q1 device supports a wide ambient temperature range of –40°C to +125°C. The device is available in the SOIC-16 (DW) package and a smaller SOIC-8 (DWV) package.
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Technical documentation

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* Data sheet ISO1042-Q1 ISO CAN Transceiver With 70-V Bus Fault Protection and Flexible Data datasheet (Rev. B) PDF | HTML Oct 15, 2020
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AB) Jul 15, 2026
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. AA) Jun 11, 2026
Application note Top Design Questions About Isolated CAN Bus Design (Rev. C) PDF | HTML May 19, 2026
Certificate TUV Certificate for Isolation Devices (Rev. M) May 7, 2026
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S) May 7, 2026
Technical article Why signal isolation matters in 48-V HEV/EV systems (Rev. A) PDF | HTML Nov 10, 2025
Application brief How to Isolate Signal and Power in Isolated CAN Systems (Rev. D) PDF | HTML Nov 7, 2025
Certificate CQC Certificate for ISOxxDWV (Rev. B) Aug 19, 2025
Certificate CQC Certificate for ISOxxDWx (Rev. K) Aug 18, 2025
Application brief High Voltage Measurement in HEV/EV Application PDF | HTML Jun 16, 2025
White paper Understanding failure modes in isolators (Rev. B) PDF | HTML Jan 29, 2024
Application brief Simplify the Design of Isolated CAN with Selective Wake ECUs PDF | HTML Apr 18, 2023
Certificate CSA Certificate for ISO1042xDWV Mar 16, 2023
Certificate CSA Certificate for ISO1042xDW Mar 16, 2023
Application brief Isolate Your CAN Systems Without Compromising on Performance or Space (Rev. F) PDF | HTML Aug 4, 2022
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? Nov 16, 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML Jun 11, 2021
Application note Isolated CAN Reference Design (Rev. E) Jul 22, 2020
Functional safety information ISO1042-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML Jun 18, 2020
Technical article Streamlining isolated CAN and power interface designs for 48-V HEV systems PDF | HTML May 1, 2020
Third party document Simplify Isolated CAN, Power Interfaces for HEV 48-V Systems Jul 16, 2019
Technical article 5 ways TI’s tiny devices deliver huge innovations to engineers PDF | HTML Nov 8, 2018
Technical article Reduce emissions and drive up immunity in your isolated CAN systems PDF | HTML Nov 7, 2018
Application note How to Design Isolated CAN Systems With Correct Bus Protection PDF | HTML Jun 19, 2018

Design & development

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Evaluation board

ISO1042DWEVM — ISO1042DW High Speed, High Performance, Robust EMC Isolated CAN Evaluation Module

ISO1042DWEVM is an evaluation module used to evaluate the high performance, reinforced isolated CAN ISO1042 in a 16-pin wide body SOIC package (package code DW). The EVM features enough test points and jumper options to evaluate the device with minimal external components.

User guide: PDF
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Evaluation board

ISO1042DWVEVM — ISO1042DWV High Speed, High Performance, Robust EMC Isolated CAN Evaluation Module

ISO1042DWVEVM is an evaluation module used to evaluate the high performance, reinforced isolated CAN ISO1042 in an 8-pin wide body SOIC package (package code DWV). The EVM features enough test points and jumper options to evaluate the device with minimal external components.
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Simulation model

ISO1042 IBIS Model

SLLM395.ZIP (84 KB) - IBIS model
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SOIC (DWV) 8 Ultra Librarian
SOIC (DW) 16 Ultra Librarian
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