• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 32 subscribers
  • Views 224 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

TCAN1145-Q1: Regarding functional safety

SRIVATSAN R
Prodigy 130 points
Part Number: TCAN1145-Q1
Other Parts Discussed in Thread: SN65HVD257,

Hello,

   1. We have this part no "SN65HVD257" which is having functional safety features .Is that means it is functional safety compliant ?

   2. Is this CAN transceiver "TCAN1145-Q1" functional safety compliant , can be used for multi topology redundant networks  and can be used as an alternate to SN65HVD257 ?

   3. What is the difference between functional safety capable, functional safety quality managed and functional safety compliant in TI products portfolio? 

  • 0
    TI__Genius 15345 points

    Hi Srivatsan,

    The different tiers of functional safety are TI parts that have had safety tests done on them. Different TI parts have had less or more tests preformed so that is what differentiates the tiers. You can find out more at this link here.

    The SN65HVD257 has had no tests done on it by TI but this does not mean it is not a "safe" device. It meets all the requirements for ISO11898-2 and as you said it comes with protection features. The difference is it does not come with any documentation on safety tests preformed on it.

    The TCAN1145 is Functional Safety Quality-Managed. This is the mid tier at TI and it does come with documents on Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA. The big difference is that the TCAN1145 is an automotive rated device where as the SN65HVD257 is not. You can use the TCAN1145 as an alternative to the SN65HVD257 but it might be overkill depending on the requirements of your system. However keep in mind the pinouts and voltage requirements are not the same between devices.

    Hopefully this clears some things up, let me know if you have any further questions.

    Best,

    Chris

  • 0 in reply to Chris Ayoub
    Prodigy 130 points

    Hi Chris,

       Thanks for the information.

     1. One more query is that "You can use the TCAN1145 as an alternative to the SN65HVD257 but it might be overkill depending on the requirements of your system.". What do you actually mean by this statement, like how this IC will overkill, like any drawbacks are there ?

    2. Also, the inventory status of TCAN1145-Q1 parts are showing "not available" and material type it is showing "pre production". Is it readily available for order , if not can you mention the lead time for ordering this part.

    Regards,

    Srivatsan.R

  • 0 in reply to SRIVATSAN R
    TI__Genius 15345 points

    Hi Srivatsan,

    When I say overkill I mean that the TCAN1145 is rated to handle much higher voltages and much faster speeds. It has a Vsup range of 4.5V -28V whereas the  SN65HVD257 has a Vsup range of 4.5V-5.5V. The TCAN1145 can run up to 5-Mbps where as the  SN65HVD257 can only run up to 1-Mbps. There are many more differences but if you don't need all the features of the TCAN1145 then the  SN65HVD257 is a simpler option that will give you less to worry about.

    The TCAN1145 is just out of stock right now. They are active and in production so they will come back in stock soon, I just don't know when.

    Best,

    Chris