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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

    eem2am

    414
    0
    Aug 3, 2009
    Hello,

    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 work......it 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

    GreenGiant

    830
    6
    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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