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Original question:

TLV3201-Q1: I have a question to absolute maximum rating for TLV3201-Q1.

TLV3201-Q1: Abs max Ratings for Input pins

Muwei Zheng
Intellectual 1580 points
Part Number: TLV3201-Q1

Tool/software:

Hi team,

My customer is considering TLV3201-Q1, and from datasheet there is a note mentioned "Input signals that can swing more than 0.5V beyond the supply rails must be current limited to 10mA or less". Customer think this note is confusing, since it may be interpreted as they can let input signal swing more than (VCC)+0.5V, if the current is limited to 10mA.

Is it correct that customer should keep input voltage within (VCC)+0.5V no matter of any input current? Any reason or background to specify this requirement in the datasheet?

Thank you,

Muwei Zheng

  • 0
    TI__Guru 60566 points

    Hello Muwei,

    The 10mA limit is to protect the input protection:

    The specified input range is VEE-0.2 to VCC+0.2V

    After 0.2V, the input diodes start to conduct, and that current needs to be limited to prevent damage to the input resistors and diodes.

    Obviously, it would take a large voltage (10V) to get 10mA through a 1K resistor (way beyond abs max)

    As mentioned in the datasheet, if the inputs may be exceeded, external clamping is recommended, but keep it below 0.5V past the rails (Shottky clamp).