• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 33 subscribers
  • Views 196 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.

TUSB1146: Differential impedance of DP[3:0]

Roy Hsu
Genius 9400 points
Part Number: TUSB1146

Hi Team,

Datasheet mentions that DP[3:0]P/N pairs should be routed with controlled 90-Ω differential impedance (±10%). If for some reason my customer will have to make it 85-Ω differential impedance (±10%), will it be acceptable?

Thanks!

Roy

  • 0
    TI__Guru 64326 points

    Hi Roy, 

    Routing the DP lanes at 85-Ω differential impedance (±10%) is not recommended. If routing at 85-Ω differential impedance, tolerance should be less than 5% to keep the range inside the 90-Ω differential impedance (±10%) range.