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PCA9306: Input Leakage Current Spec in datasheet

Madeleine Roche
Prodigy 110 points

Part Number: PCA9306

Tool/software:

Hello,

The datasheet does not specify what the input leakage current is when Vin = 0V and EN = 0. Can you help specify this use case? 

I have a design where the I2C SDA2/SCL2 are pulled-up to 3.3V rail that is ON, while VREF2, VREF1 and EN are OFF.

I want to know if the high-impedance state of the internal FETs can be guaranteed in this state and if the input leakage current spec applies to this scenario.

Thanks!

  • 0
    TI__Guru 58358 points

    Hi Madeleine,

    The input leakage current spec IIH should be sufficient. 

    Since your VI = 3.3 V which is < 5 V, you can assume that < 5 uA of current will leak. Since 5 V is a larger supply, 3.3V will leak less than the maximum spec of 5 uA. 

    Regards,

    Tyler