• State Resolved
  • Replies 3 replies
  • Subscribers 33 subscribers
  • Views 42 views
  • Users 0 members are here
Support feedback
Options
Options
Related

THVD1400V: 1.2V Logic Level RS-485/RS-422 transceiver

Steve
Prodigy 100 points
Part Number: THVD1400V

Product Specs:

Hi, 

I am looking for an RS-485/RS422 transceiver that can work off 1.2V logic level. The lowest I have come across is TI's THVD1400V which supports VIO down to 1.65V. But with VIH min = 70% of VIO, this would not reliably support 1.2V logic level with tolerances factored in. 

Does TI know of any part that can work down to 1.2V VIO levels?

Thanks!

  • +1
    TI__Guru 73181 points

    Hi Steve,

    We don't have a device that can work down to that logic level yet. I think right now you would need to use a normal RS485 transceiver and pair it with a level translator that can work down to 1.2V.

    We have seen some requests for it, I've let our new product development team know about your request. Could you provide more information so in the future they may be able to look into this?

    1) what is the end application? (MRI machine, printer, tractor, ect...)

    2) what max speed/datarate is required?

    3) why was RS485 chosen? (Why not LVDS, CAN, or RS232 for example)

    4) Are you seeing an industry level need for lower voltage down to something like 0.8V?

    5) What exactly is interfacing with the RS485 transceiver that needs 1.2V

    6) any other requirements? (low Icc current, small package, super low cost, certain ESD needed, ect.)

    -Bobby

  • 0 in reply to BOBBY
    Prodigy 100 points

    Thanks Bobby. I don't know that I can provide this info over public forum. Please reach out to me separately or provide your email address and I can follow up with you offline.  

  • 0 in reply to Steve
    TI__Guru 73181 points

    Steve,

    Feel free to reach out to me at duynguyen@ti.com if you'd like to provide some feedback. I appreciate it.

    -Bobby