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LSF0204: Does LSF0204 support hot-swap?

Cain
Prodigy 50 points
Part Number: LSF0204

Tool/software:

Does LSF0204 support hot-swap?

  • 0
    Guru 317250 points

    That depends on your definition of "hot-swap". Is it the LSF0204 itself or only the other devices that are powered down and hot-swapped? What do you want to happen when some device is (un)plugged? When exactly should that happen?

    The LSF isolates the two sides only if the EN pin is forced low.

  • 0
    TI__Mastermind 23210 points

    Hello Cain,

    Our apps team is current out today celebrating Labor Day (US Holiday). Allows us two days to respond back. Thank you for your understanding.

    Regards,

    Josh 

  • 0 in reply to Clemens Ladisch
    Prodigy 50 points

    Hi Clemens,
    Thanks for your replys, We are using LSF0204 to Isolate GPIO signal, and place it between the connector and SOC. A key requirment here is that  the connector  needs to support hot-swap---meaning it may be unplugged or plugged  in while the device is  power on.  

  • +1 in reply to Cain
    TI__Mastermind 40966 points

    Hi Cain,

    Similar to Clemens' response, the LSF can be used for hot-swap application if the bus is being connected properly (order should be ground, VCC, and then data).

    Please keep in mind that hot-swap application typically involves longer traces and connector lengths- since the LSF0204 is a passive translator with no buffering it will not be able to redrive the signals through higher capacitances. 

    Regards,

    Jack