CMOS logic gate circuits

Discussion in 'Homework Help' started by nyasha, Dec 3, 2011.

  1. nyasha

    Thread Starter Active Member

    Mar 23, 2009
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    1
    So l am asked to find a CMOS realization of a boolean function. I just want to know if l did it correctly. I have attached the problem and my worked out solution.
     
  2. Georacer

    Moderator

    Nov 25, 2009
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    1,266
    Your Pull Down Network is correct, but your Pull Up Network isn't.

    The expression you want for that part is:
    (A+B(C+D))'=
    A'(B(C+D))'=
    A'(B'+(C+D)')=
    A'(B'+C'D')

    Care do give it another try?
     
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  3. nyasha

    Thread Starter Active Member

    Mar 23, 2009
    90
    1
    Sorry for the late response. Here is my second attempt. Is it correct now ?
     
  4. Georacer

    Moderator

    Nov 25, 2009
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    1,266
    Yep, that's it. Good job!
     
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  5. nyasha

    Thread Starter Active Member

    Mar 23, 2009
    90
    1
    I tried another problem just to make sure l get the hang of it, is this correct ? My other question is, does the PUN network realize the circuit for the function for y' and the PDN network realizes the function for y ?
     
    Last edited: Dec 12, 2011
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