• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 17 subscribers
  • Views 415 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.

TMUX6111: Are there ESD diodes from Soucre/Drain to the supply rails?

Ralph2
Prodigy 100 points
Part Number: TMUX6111
Other Parts Discussed in Thread: TMUX7411F,

Dear Texas Support Team,

Are there ESD diodes from Soucre/Drain to the supply rails, as with the TMUX7411F?
Can overvoltage protection be achieved by limiting the IANA_IN/IANA_OUT current to less than 30 mA?

Thanks!

  • 0
    Guru 316760 points

    The S and D pins indeed have clamping diodes to VSS and VDD, and limiting the clamping current to less than 30 mA will not damage the device.

    (Your circuit must be able to handle these currents flowing into the supplies. For ESD events, normal decoupling capacitors are enough; for transient or DC voltages, you might need additional protection.)

  • +1
    TI__Genius 10552 points

    Hi Ralph,

    The TMUX6111 does have ESD diodes from S/D pins to supply rails. An indicator is the maximum value on the input voltage rating. For a device with a clamp diode, the input voltage will be limited to VDD or VDD + some voltage (i.e. 0.3, 0.5V), however a device without the positive clamp diode will have a numerical value.

    To answer your main question - Yes, in this case, you can achieve overvoltage protection by limiting the current to less than 30 mA. 

    Thanks!

    Alex