• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 32 subscribers
  • Views 544 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.

About VOH/VOL difference of SN65LVDS101 & SN65LVP20

Satoshi
Guru 19595 points
Other Parts Discussed in Thread: SN65LVDS101, SN65LVP20

Is anything reasonable although the spec. of VOH/VOL differs between SN65LVDS101 and SN65LVP20?

Moreover, can it use combining SN65LVDS101 and SN65LVP20?

Thank you for your consideration.

  • 0
    TI__Mastermind 20820 points

    Hi Satoshi,


    I need to check with a designer to find out the reasoning behind the different VOH and VOL levels but I do not see any issue with having the two operate together.

    Regards, 

    Michael Peffers

    Analog Applications

  • 0 in reply to Michael Peffers
    TI__Mastermind 20820 points

    Hi Satoshi,


    The typical VOD for an ECL driver is 800mV by design. If you look at the SN65LVDS101 the ECL driver on it has ~575mV of output differential swing which is what is causing the mismatch in the data sheet VOH and VOL numbers.

    As far as driving one part with the other it can be done in either orientation (SN65LVDS101 to SN65LVP20 or SN65LVP20 to SN65LVDS101). The SN65LVDS101 has a wide input common mode rage from 0-4V so it will support the entire common mode voltage range of the SN65LVP20. The SN65LVP20s input common mode range minimum is 1.2V and the SN65LVDS101 typically puts out a 2V common mode voltage so the SN65LVP20 will support the SNLVDS101. Please let me know if you have any additional questions.

    Regards,

    Michael Peffers

    Analog Applications