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TMUX136: Maximum allowable current

VR27
Prodigy 50 points
Part Number: TMUX136

Hi,

I am looking for some clarification on the maximum allowable current into the TMUX136.

The datasheet states it is +/- 20mA Continuous. What is the maximum pulsed current and duration of this ? or is it simply that the pulse current x dutycyle should not increase above specification?

Let's say I have a LVTTL signal with +3v3 and a 100R resistor on the output of the MUX, if the duty cycle is 50% then average current would be below 20mA. Is this what the datasheet means by maximum allowable continuous current?

  • +1
    TI__Mastermind 24440 points

    Hello 

    So after talking to our design team, 20 mA is more of a reliability spec. 

    Having pulse current means you can put more than 20 mA through the device and still have reliable operation.

    So in your use case, having an average current through the switch of< 20mA  due to the duty cycle is fine.

    Please let me know if you have any additional questions!