CAN FD transceiver for the 125°C bus
The Texas Instruments TCAN1042VDRBRQ1 is a CAN FD transceiver rated for 5Mbps data rate, compliant with the ISO 11898-2:2016 standard. The single supply runs from 4.5V to 5.5V, matching the typical 5V CAN rail found in automotive ECUs and industrial motor drives.
The full military-temperature-span rating means this transceiver handles cold-soak starts at -55°C and under-hood heat soak at 125°C without derating the bus timing. For a procurement decision, that range eliminates the need to qualify a second temperature-grade variant for a mixed fleet — one line item covers both the cabin and the engine bay. The 5Mbps data rate confirms this is a CAN FD part, not a legacy 1Mbps CAN 2.0 device, so the MCU's CAN FD controller can use the faster arbitration phase without a protocol mismatch.
Package and mounting for the production line
Housed in an 8-VSON package measuring 3x3 mm with an exposed pad, the TCAN1042VDRBRQ1 uses a wettable-flank design — the side plating allows automated optical inspection (AOI) of the solder joint after reflow, which is a requirement for many automotive-tier assembly lines.
For a BOM planner, that means no last-time-buy deadline to track and no forced qualification of a drop-in replacement mid-production. The base product number is TCAN1042, and the VDRBRQ1 suffix identifies the wettable-flank VSON package variant — the same die is available in other packages if the assembly line prefers a different footprint.