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SN74CB3Q16211: hot swap funciton for SN74CB3Q16211

Oliver Ou
Intellectual 2845 points

Part Number: SN74CB3Q16211

Hi,

My cusotmer wants to know if SN74CB3Q16211 can suport hotswap applicaiotn?

I can't find such discription on datsheet, can you help to check and give some comments? 

Thanks a lot.

Oliver Ou

  • 0
    TI__Intellectual 1465 points

    Hi, Oliver,

    It depends what kind of feature you are looking for in hot-swap applications.

    If you are referring to the case that the switch is protected and can withstand I/O voltage of up to 5V during a partial powered-down scenario (caused by sudden dip in the system power due to hot insertion) then the answer is YES. The SN74CB3Q16211 has a feature called powered-off protection that will make the signal path Hi-Z when Vdd=0V so could protect I/O pins behind the switch during sudden power plunge. 

    However, if you are referring to whether the SN74CB3Q16211 can handle large amount of in-rush current during hot-swapping event the answer is NO. The device is rated to handle maximum current of 64mA. The device also does not provide any short-circuit protection or fault protection. You would need a dedicated hot-swap controller for that. 

    Thanks,
    David