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TS5A23166: leakage to COM1/2

Alberto Doronzo
Expert 4970 points
Part Number: TS5A23166


Hi,

in a design an engineer is seeing ~123mV on  COM1 when NO1 is set at zero and the switch is off.

Is there any leakage path or pull up to the COM1 pin when the part is powered?

Thank you!

Regards,

Alberto

  • 0
    TI__Mastermind 45605 points

    Alberto,

    When the switch has a valid Vcc and the IN1 pin is set to low the COM1 to NO1 path becomes high impedance.  This means the COM1 and NO1 pins can float depending on what is connected to the signal path. 

    How are you ensuring the COM1 pin is not floating when the signal path is high impedance?

    Do you have a schematic so we can see what is connected to either side of the signal switch?

    Do you have scope shots for the COM1, NO1, IN1, and Vcc pins? 

    There is an off leakage spec in the datasheet but this leakage would occur if NO1 was at the highest voltage Vcc, not NO1 when it is zero volts since there isn't any energy to push into the switch. 

    Thank you,

    Adam

  • 0 in reply to Adam Torma
    TI__Expert 4970 points

    Hi Adam,

    thanks for the pointers, we ended figuring out that the issue originated elsewhere on the board and not caused by the TS5A23166.

    Thank you much for the assistance!

    Regards,

    Alberto