ISO1042-Q1 Automotive, isolated CAN transceiver with 70-V bus fault protection & flexible data rate |

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



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.


  • AEC Q100: Qualified for automotive applications
  • Grade 1: –40°C to 125°C ambient temperature
  • 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

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Part number Order Isolation rating (Vrms) Surge voltage capability (Vpk) Data rate (Max) (Mbps) Bus fault voltage (V) Common mode voltage (V) Operating temperature range (C) HBM ESD (kV) Rating
ISO1042-Q1 Order now 5000     10000
5     -70 to 70     -30 to 30     -40 to 125     8     Automotive    
ISO1042 Order now 5000     10000
5     -70 to 70     -30 to 30     -40 to 125     8     Catalog