• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 20 subscribers
  • Views 225 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.

LMK1C1108: Output Short?

Jonathan Kubala
Prodigy 40 points
Part Number: LMK1C1108

What would happen to the chip if one of the buffers became shorted to GND? 

  • 0
    TI__Genius 16845 points

    Typically the outputs can support a short to GND. I will double check internally for confirmation and let you know what is discovered.

    Kind regards,
    Lane

  • 0
    TI__Mastermind 30710 points

    Jonathan,

    One buffer can survive a short to ground at room temperature, but we have no lifetime reliability data with this condition, so I'm unsure about long-term effects such as electromigration. Short to ground at maximum ambient temperature might be okay for brief durations <1s, but once switching the device self-heating combined with high ambient temperature is beyond what the device is planned to tolerate. Even if the device is undamaged, other outputs are likely to begin drooping or seeing performance degradation as a result of the elevated supply current. The same is true for more than one output shorting to GND simultaneously: as more outputs are shorted, the self-heating will be higher, so the reasonable ambient temperature must be reduced before damage.

    Regards,

    Derek Payne