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SN74LVC2G14: what is VT+ voltage range when VCC=5.0V

dimitry chen
Expert 1145 points
Part Number: SN74LVC2G14


Hi

Could you provide VT+ voltage range when VCC=5.0V

and I am looking for dual inverter logic IC, do you have any suggestion

thanks

  • 0
    Guru 318050 points

    At 5 V, VT+ is between 1.9 V and 3.7 V.

    You could use linear interpolation between the 4.5 V and 5.5 V values (so the range would become 2.05 V…3.4 V), but that would assume that your power supply is infinitely accurate.

    There are many other dual inverters.

  • 0 in reply to Clemens Ladisch
    Expert 1145 points

    I am curious what is the percentage that  VT+ is in max?

    could you provide a rough number of percentage  , ex . 1%   VT+   is above 3.0V ?

  • 0 in reply to dimitry chen
    TI__Genius 16735 points

    Hi,

    I am unclear on your question of percentage that VT+ is in max. Its not a probability on when the device will switch. Standard CMOS devices switch at 1/2*VCC. Parts with schmitt triggers add hysteresis so that the part doesn't switch multiple times when the input increases slowly past 1/2*VCC.

    Typically the point at which the device will switch for a rising edge will be between the VT+ min and max spec. The reason we don't give a typical is because its hard to specify it for large number of manufactured part. It is a constant value on one part however varies between different parts. You should read the spec as the output is guaranteed to switch to a high when the input is above 3.7V.

    It also depends on the accuracy of your supply and design as clemens has mentioned. Most supplies don't hold steady and will cause VT+ to move.

    Thanks!

    -Karan