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BUF20800: Relation between VS power supply and I2C

Kaji@PAN
Mastermind 7015 points
Part Number: BUF20800

Hi,

I previously asked about BUF20800 in the following thread.
In connection with that, I would like to ask you a question.

I understand that I2C can not be done with only the VSD power supply.
When VS power supply is applied after VSD power supply is applied, what voltage will I2C be effective for VS power supply?
Please let me know if there is a threshold of VS power supply or time restriction etc.

Best Regards,

e2e.ti.com/.../647399

  • 0
    TI__Intellectual 2805 points
    Hello Kaji@PAN,

    The minimum specified VS is 7 V and all functionalities are available when VS with a value from 7 V to 18 V is applied after VSD.
    For the timing, it is recommended to apply the digital supply VSD before or at the same time as the analog supply.

    Best regards,
    Diaara