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TCAN1044AV-Q1: Could TCAN1044A-Q1 support 3.3V ?

Kygo Cheng
Expert 6830 points
Part Number: TCAN1044AV-Q1
Other Parts Discussed in Thread: TCAN1044A-Q1, AWR1843

Hi Team,

It looks like  TCAN1044A-Q1 can not support 3.3V system.

If I want to connect  MCU which is 3.3V system in AWR1843 , the TCAN1044A”V”-Q1 is the only solution ?

>>If this is true, could you help support TCAN1044AVDRQ1 20pcs? THX

  • +1
    TI__Mastermind 47895 points

    Hi Kygo,

    Any CAN transceiver with a 'V' suffix supports voltage translation of digital signals to a supplied Vio level. TCAN1044AV supports Vio down to 1.7V. However, this device requires a 5V supply for Vcc. Devices without the 'V' suffix do not support Vio and may have different functions for this pin (TCAN1044A pin 5 is NC). 

    Digital voltage translation can also be done externally by other means to allow the 5V domain of a TCAN1044A to interface with lower-voltage MCU signals. However, this will require extra components on the board and introduce more delay in the signal lines. It sounds like TCAN1044AV-Q1 will be your prefered solution here. 

    Let me know if you have any more questions. If we've answered your question, please let us know by clicking the green button. 

    Regards,
    Eric Schott