Comma.ai Panda Board

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Use TI TCAN3404-Q1 for each of the three CAN channels.
Why it fits:
  • CAN FD: supports data rates up to 8 Mbps
  • Automotive qualified: AEC-Q100
  • 3.3 V MCU interface: compatible with the STM32H725
  • Wide bus fault protection: ±58 V
  • Low-power standby mode
  • Small VSON package: suitable for the 85 × 50 mm board
Recommended orderable part:
  • TCAN3404DRBRQ1
  • Package: 8-pin VSON/DRB, 3 × 3 mm
  • Quantity: 3
Use one TCAN3404-Q1 per channel, followed by the channel’s common-mode choke and PESD2CAN protection. Verify that the footprint includes the exposed thermal pad and connect it to ground with nearby vias.
hwarang2014

hwarang2014

Recommand NXP product

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I recommend the NXP TJA1044GT/3 for each CAN channel.
  • Automotive AEC-Q100
  • CAN FD up to 5 Mbit/s
  • Designed for direct use with 3.3 V microcontrollers, including STM32H725
  • Standby and wake-up support
  • SO8 package, easier to assemble than VSON
  • Bus fault protection and excellent automotive EMC performance
Use three TJA1044GT/3 transceivers, one per CAN-FD channel. For improved signal integrity on long or highly branched automotive networks, consider the newer NXP TJA1443 CAN SIC transceiver, but it is larger and requires more support/configuration.
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Red Panda Compatible CAN-FD Interface thumbnail
Automotive USB-C interface based on STM32H725 with three CAN-FD channels, Red Panda-compatible firmware behavior, harness connector, power protection, and connector placement.

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