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Original question:

ISO1050: ISO1050 questions in low data rate CAN

ISO1050: What is the ISO1050's max data rate CAN?

Eggsy Pang
Expert 4985 points

Part Number: ISO1050
Other Parts Discussed in Thread: ISO1042

Hi Team,

    What is the  ISO1050's max data rate CAN? I saw it is 1Mbps in the datasheet, but I don't know how to get the this data.  Do you have any suggestions?

Thanks!

  • 0
    TI__Expert 6195 points
    Hi Eggsy,
    Yes the ISO1050's maximum data rate is 1Mbps. This can be found on the front page of the datasheet, and can be interpreted through the switching characteristics of the device later on in the datasheet.
    If you are looking for a faster max data rate, I would recommend you check out the newest isolated CAN transceiver from TI, the ISO1042. The ISO1042 supports up to 5Mbps CAN data rate.
    Please let me know if you have any questions.
    Best regards,
    Dan
  • 0 in reply to Dan Kisling
    TI__Expert 4985 points
    Hi Dan,

    I saw the switching characteristics and it showed to me tPLH/tPHL, but I don't know how to calculate the data rate based on tPLH/tPHL. Do you give me some related example?
    Thanks!
  • 0 in reply to Eggsy Pang
    TI__Expert 6195 points
    Hi Eggsy,

    Unfortunately, it's not a very clear answer. The CAN standard is written for backwards compatibility for classic CAN. The arbitration in faster data rate CAN happens at a slower speed. So tPLH / tPHL numbers alone cannot be used to determine data rate.
    However, if you do have a CAN FD capable part, such as the TCAN1042 or ISO1042, there will be FD Timing Parameters in the datasheet which can be used to determine maximum data rate. For example, in the ISO1042 datasheet, you can see bit time on CAN bus output pins on the order of 200ns (1/200ns = 5M).

    Does that answer your question?
    Best regards,
    Dan