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Original question:

TLV803E: TLV803EF26DBZR reset function abnormal

TLV803E: More Abnormal behavior - RESET output

Sara Caron1
Prodigy 115 points
Part Number: TLV803E

Hi

I am using a threshold level of 2.63 to check my VDD of 3.0V. The circuit is as follows:

When 3.0V is present, the RESET level drops to 0.325V. When 3.0V is not present RESET level rises to 0.545V. Both cases the FET reverses the state to a logic high.. I increased the pullup resistor to the 3.3V to 51k and the RESET level drops but the RESET level does not go to open circuit when VDD =0. The input capacitance of the n-FET is 73pF typ. Any ideas? 

  • 0
    TI__Genius 11401 points

    Hi Sara 

    Can you please do below experiments -

    • Check the output level at RESET for VDD< 2.4V and try the same experiment without pullup supply. 
    • Please check the output with pullup 3V 
    • Can you please confirm if you are seeing same issue on multiple devices? 

    Regards

    Trailokya