Isolated CAN FD transceivers deliver high bus fault protection

1st November 2018
Posted By : Lanna Cooper
Isolated CAN FD transceivers deliver high bus fault protection


Texas Instruments has introduced two new isolated Controller Area Network (CAN) flexible data rate (FD) transceivers that combine the highest bus fault protection, highest Common-Mode Transient Immunity (CMTI), and lowest electromagnetic emissions into a 35% smaller package.

With a higher working voltage than competing devices and faster communication speeds than the classic CAN standard, the ISO1042 and ISO1042-Q1 help engineers better protect low voltage circuits and increase communication throughput in industrial applications such as grid infrastructure, motor drives and building automation, as well as Hybrid Electric Vehicles and Electric Vehicles (HEVs/EVs).

Key features and benefits of TI’s ISO1042 and ISO1042-Q1 isolated CAN FD transceivers

  • Highest working voltage: With an 18% higher working voltage of 1,000Vrms and a withstand voltage of 5,000Vrms, the ISO1042 and ISO1042-Q1 feature longer life times, resulting in improved system reliability.
  • Increased device protection: Featuring a high bus fault protection of ±70V, which provides a 20% higher short-to-DC margin, the ISO1042 and ISO1042-Q1 protect 12, 24 and 48V battery or power-supply systems during high voltage shorts.
  • Immunity and emissions:
    • Highest electromagnetic immunity: The ISO1042 and ISO1042-Q1 feature a CMTI of 85kV/us (minimum) with high ESD protection of +/- 8kV, using the International Electrotechnical Commission (IEC) testing standard, which helps engineers design electronics that can maintain operation in noisy environments.
    • Lowest EMC emissions: The ISO1042 and ISO1042-Q1 deliver the lowest Electromagnetic Compatibility (EMC) emissions, thereby maintaining system signal integrity. The ISO1042-Q1 meets the automotive industry standard (IEC TS62228) for robust EMC.
  • Drive signals faster in CAN-based systems: These transceivers support CAN FD speeds up to 5Mbps with a short loop delay of 215ns (maximum), enabling faster payload compared to classic CAN.


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16th October 2019
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