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TCAN330G: Opposite transceiver

Kenji Ohno1
Genius 5095 points
Part Number: TCAN330G
Other Parts Discussed in Thread: TCAN330

Hi Team,

My customers are using TCAN330G.

On the system, it may be opposed to the CAN transceiver of the original competitor(PCA82C251T).

Can it communicate?

Best Regards,

Kenji

  • 0
    TI__Guru 60222 points
    Ohno-san,

    The two transceivers can communicate with each other, but one major difference is TCAN330 is a 3.3V CAN transceiver, while the PCA82C251T is a more typical 5V CAN transceiver. The bus voltages on the 3.3V transceiver were designed to still work with a 5V transceiver, but because the recessive levels are exactly the same, there will be common-mode noise emitted. Is there a reason that a 5V TI CAN transceiver wasn't chosen? Something like the TCAN1042?

    Regards,
  • 0 in reply to Eric Hackett
    Genius 5095 points
    Hi Eric,

    Thank you for answering..
    It is customer's requirement to use 3.3V.

    Best Regards,
    Kenji
  • 0 in reply to Kenji Ohno1
    TI__Guru 60222 points
    Kenji,

    Understood, just be aware that 5V and 3.3V CAN transceivers will emit more noise than all 5V transceivers on a bus or all 3.3V transceivers on a bus because of the slight difference in recessive levels.

    Regards,