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TLV3401IDBVR comparator max drain-source voltage for the open-drain output stage

Murdock Taylor
Prodigy 100 points
Other Parts Discussed in Thread: TLV3401

The TLV3401IDBVR is an open-drain output comparator, but the data sheet does not give any specifications for the max drain-source voltage for the output stage.

 

Question 1 -- Is the maximum output drain-source voltage the same as Vcc or is it a fixed value (20V, 30V, etc.)?

 

Question 2 -- Can the comparator be operated as a level shifter where the comparator is powered from 5V, but the output stage is pulled up to 15V?

 

Question 3 -- If so what is the maximum voltage that the output stage can be pulled up to?

 

Murdock Taylor

Electronic Product Design & Development Consulting Services (EPDDCS)

murdock.taylor@EPDDCS.com

www.EPDDCS.com

  • 0
    TI__Guru* 93105 points

    Hello Murdoc,

    The TLV3401 output is simply an open-drain, NMOS transistor, with its source connected to the VNEG (GND pin). The internal output ESD cell does not connect back to any other internal nodes so the drain is open.

    Question 1 -- Is the maximum output drain-source voltage the same as Vcc or is it a fixed value (20V, 30V, etc.)? The maximum drain-to-source voltage is 17 V Vcc to GND, as listed in the Absolute Maximum Ratings table. However, the Recommended Operating Conditions is 16 V maximum.

    Question 2 -- Can the comparator be operated as a level shifter where the comparator is powered from 5V, but the output stage is pulled up to 15V? Yes.

    Question 3 -- If so what is the maximum voltage that the output stage can be pulled up to? See question 1.

    Regards, Thomas

    PA - Linear Applications Engineering