74HC595 vs HCF4094 (Clock Project)

Discussion in 'The Projects Forum' started by Darren Midkiff, Jan 5, 2016.

  1. Darren Midkiff

    Thread Starter New Member

    Jan 5, 2016
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    I am following an instructable to build a clock for my sister that displays the time in text lit up by LEDs. The instructable calls for the use of HCF4094 shift registers. Unfortunately, these are no longer availible (at least on digikey), so I decided to use 74HC595s in their place. Unfortunately, the inputs and outputs are not exactly the same on each chip. The HCF4094 has Strobe, Data, Clock, and OE pins as inputs. The 74HC595 has MR', SHCP, STCP, OE', and DS.

    I set up the clock such that:

    Strobe = STCP
    Data = DS
    Clock = SHCP
    OE != OE'
    MR = 0

    Unfortunately, it doesn't seem to be working. Did I make a mistake in my set up?
     
  2. Darren Midkiff

    Thread Starter New Member

    Jan 5, 2016
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    I meant MR' = 1, but same Idea. Master Reset is constantly off.
     
  3. Brevor

    Active Member

    Apr 9, 2011
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  4. Darren Midkiff

    Thread Starter New Member

    Jan 5, 2016
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  5. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    Right. The first letters vary by manufacturer. Same pin-out.
     
  6. Darren Midkiff

    Thread Starter New Member

    Jan 5, 2016
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    And are the pin equalities I used correct?
     
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