• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 35 subscribers
  • Views 744 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.

Terminating SN65LVDS049

Ralf Rink
Intellectual 420 points
Other Parts Discussed in Thread: SN65LVDS049

Hello,

i need to know if it is possible to terminate the SN65LVDS049 with a 180 Ohm resitor.

kind regards Ralf

  • 0
    TI__Guru 62920 points
    Hi Ralf,

    Yes, it is OK to terminate the DOUT+/- signals of the SN65LVDS049 using higher termination resistances than the standard 100-Ohm value. One thing to note, though, is that the differential output voltage will increase as the resistance increases. The minimum/typical/maximum values provided in the datasheet are based off a standard 100-Ohm load.

    Regards,
    Max
  • 0 in reply to Miguel Robertson
    Intellectual 420 points

    Hello,

    sorry for Long delay. Now i'm continuing wit my schematics. How shoud be unused differential Inputs (e.g. Rin1+, Rin1-) be handled?

    Kind regards Ralf

  • 0 in reply to Ralf Rink
    TI__Mastermind 20820 points

    Hi Ralf,


    If you are not using one of the channels on the SN65LVDS049 (i.e. Rout 1 is not connected to anything) than it is OK to leave this channels inputs floating. If EMI is a concern for your design then I recommend tying the Rin+/- pins to a know state to avoid any unwanted EMI radiating from the IC during normal operation.