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TCAN1043G-Q1: common mode voltage and GND shift

wang lei
Prodigy 100 points

Part Number: TCAN1043G-Q1

Hello experts,

     For TCAN1043GDMTRQ1, common mode voltage is ±30V in normal mode and ±12V in sleep mode shown in the datasheet.

How many volts can this device withstand ground shift in normal and sleep mode? How to convert common mode voltage parameters into ground shift parameters？

Best regards!

Thank you

  • 0
    TI__Guru 53535 points

    Hi Wang,

    The common mode range specification describes the operational range of the CAN receiver. This can be thought of as the recommended range of the transceiver where functionality and data sheet specifications are maintained. This is generally where the concern lied for ground shift because the system is expected to continue operating with the ground shift present. 

    In contrast the absolute maximum specification describes the conditions that the transceiver can survive, but not necessarily operate under. If the conditions are outside of the recommend range (common mode range) say 32V common mode for example, we can no longer guarantee datasheet specifications and the receiver may not function correctly. However, because the absolute maximum specification has not been violated, the device will not experience any damage. 

    Let me know if you have any more questions. 

    Regards, 
    Eric Schott