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TMUX6111: input impedance in the abscence of of power supply

Part Number: TMUX6111

Hi Team, 

Can you help me to understand how I calculate the input impedance of the channels in the absence of power supply? It doesn't seem to be explicitly stated

Thanks in advance

Dan

  • The absolute maximum ratings forbid going more than 0.3 V beyond the power rails. This implies that there are ESD protection diodes from GND/VSS and to VDD, and that applying a non-zero input voltage to a powered-down device will allow current to flow into VDD and might power up the device.

  • Hi Dan,

    If you can use a lower supply device for your application, I would recommend using the "TMUX1511" (same configuration as the TMUX6111), as it offers powered-off protection that maintains high impedance on the I/O and digital logic pins when the switches supply is un-powered.

    Here is the link to the device search tool where you can find all the switches that offer powered off protection in different configurations, supply voltages etc.

    The FAQ below covers powered off protection in more detail.

    Regards,

    Saminah