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SN74LVC1G3157: Regarding Capacitance On and off state condition

Bhuvaneshwari K
Intellectual 370 points
Part Number: SN74LVC1G3157

Hi,

Need to validate the capacitance ON - OFF state measurement of the above-mentioned CMOS SPDT Switch.

Please recommend the test procedure and any test equipment needed to test for the same.

  • 0
    TI__Mastermind 24440 points

    Hello,

    Just to clarify I want to let you know that the capacitance isn't dependent on the input frequency and you should expect ~17pF( Cio on) and ~5.2pf( Cio off) across the input frequency if you were to test the device.

    1.So I would like to ask are you concerned about how this device will perform at different input signal frequencies? If so the bandwidth spec on this datasheet can help you understand how this device will perform at different input signal frequencies.

    Finally just to reiterate , across the spectrum of frequencies that the SN74LVC1G3157 is spec'ed too ( <340MHz) this capacitance is flat.

    I can look into how the capacitance is tested for this device but please let me know what you think about the things i said earlier in this thread.

    Regards,

    Kameron

  • 0 in reply to Kameron Hill
    TI__Mastermind 24440 points

    Hello,

    Any update on this issue?

  • 0 in reply to Kameron Hill
    TI__Mastermind 24440 points

    Hello I will close this thread now!