• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 34 subscribers
  • Views 340 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TCAN1042H: Can Signal is in Stanby is bad

Raphael Lutz
Prodigy 10 points

Part Number: TCAN1042H

Hello

Im developing a new sensor device, i measued the differential output voltage is not at 2.5V

Our can Signal drops diwn to 2V when Tranceiver is in STB, when 2 Trancceivers in STB its droping down to 1.25V

I hope you can help me out

  • 0
    TI__Guru 74962 points

    Raphael,

    Can you elaborate on what else is on the CAN bus, other transceivers I mean? In standby, the CAN bus voltage is expected to go to 0V, as stated in the datasheet. What looks like is happening here is that 1 or 2 CAN transceivers are in standby mode biasing the CANH and CANL pins to 0V, while other transceivers are trying to hold the CAN bus to 2.5V. So there is a leakage path being created attenuating the overall bus voltage level.

    Regards,

    Eric Hackett