Inputs to Decoders

  • Jordan Dantas

    Jordan Dantas - 2012-06-02

    I am designing an I/O expander and the first part of my design is a 5x32 decoder. The problem I am having is that the inputs I enter into the decoder can only be changed one at a time. For example, say I want to activate the 23rd minterm followed by 4th one. Currently I would have to activate several minterms before activating the desired minterm. I could fix this with an enable but that would require me to sacrifice a lot of my outputs. Basically I want to know if/how I can enter inputs that have more than one different bit back to back?

    Any Help would be greatly appreciated, and if my wording is confusing please let me know and I will try to explain my problem in more details.

    Jordan Dantas

  • Jordan Dantas

    Jordan Dantas - 2012-06-02

    Nevermind I figured it out, I just had to utilize a one bit input to the enable


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