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TCAN330: Compliance to ISO DIN 11898

Part Number: TCAN330

Hi Champs,

as i learned, the 3.3V CAN transceivers are compatible to the ISO DIN 11898 but they are not compliant to it, right? do you see major customer concerns about that or any known issues?

This documents gives some further insight and it states that we had a third party making conformity tests for the SN65HVD23x. Have we similar tests done or planned for the TCAN33x?

  • Hi Simon,

    That's right - the ISO standard was written primarily with 5-V transceivers in mind and so certain specifications like the minimum dominant CANH voltage or the recessive bias level wouldn't align with a 3.3-V implementation.  Since CAN is a differential signaling standard, though, the absolute single-ended (ground-referenced) voltages are not critical for communication.  It is the differential levels which are most important, and on these specifications the HVD23x and TCAN33x families are compliant.  For this reason we tend to not hear of applications concerns from customers related to signal integrity or interoperability, but rather simply concerns about strictly meeting the standard compliance (which is important for some applications).

    At the moment we didn't have plans for any third-party conformance or interoperability testing on TCAN33x.  (These tests are usually pursued as part of a formal component approval process at automotive OEMs, and we do not currently have plans for Q100 certification on the TCAN33x family.)

    Max