decoder

Discussion in 'General Electronics Chat' started by Xufyan, May 27, 2011.

  1. Xufyan

    Thread Starter Member

    Aug 3, 2010
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    How to construct a 5 bit decoder from 3 to 8 decoder?
    i have designed 3 to 8 decoder but don't know how to convert it into 5x32 decoder.
     
    Last edited: May 27, 2011
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    Is this a homework question?

    What have you done to solve the problem?

    Bertus
     
  3. Xufyan

    Thread Starter Member

    Aug 3, 2010
    114
    0
    this isn't a homework question, i have found this question in the past examination papers of university so i've decided to solve it, i have already designed an 3x8 decoder and now i need to convert it into 5 bit decoder, but i have no idea how to do it.

    first of all i have drawn a truth table for the 3x8 decoder and wrote equations and then implemented those equations.
     
  4. Xufyan

    Thread Starter Member

    Aug 3, 2010
    114
    0
    please elaborate, i didn't understand you.
     
  5. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    Take a look at the 74138 3 to 8 decoder chip.
    I have attached the datasheet.

    Bertus
     
    Xufyan likes this.
  6. Xufyan

    Thread Starter Member

    Aug 3, 2010
    114
    0
    Thankyou :)
     
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