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NAND gate for LTspice?

Discussion in 'General Electronics Discussion' started by eem2am, Jan 5, 2013.

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  1. eem2am


    Aug 3, 2009

    I wish to do a NAND latch in LTspice.

    Do you know how to get a NAND gate?

    ....i used the "SN74LVC1G57" model from the LTspice yahoo forum website, but it doesnt just keeps telling me "cannot find SN74LVC1G5x.lib"......i dont know why it says that, because i am not using "SN74LVC1G5x", i am using "SN74LVC1G57".

    I put the .sub file in the schematic as a spice directive, so it should have seen it.....also, the symbol correctly has the prefix "x" so i cannot see how it did not work?

    I have often used third party devices in LTspice with no problem, but i cannot seem to get a NAND gate to work.
  2. GreenGiant


    Feb 9, 2012
    if you cant find any in the libraries why not just put in an AND and then a NOT on the output. same thing
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