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Latching 4017 Output

Discussion in 'General Electronics Discussion' started by sall, Feb 13, 2011.

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  1. sall

    sall

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    Jan 29, 2010
    What other ways are there to latch the outputs of 4017 decade counter until the cycle completes other than a bunch of diodes or with SCRs? TIA!
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,839
    Jan 21, 2010
    You could use a couple of latches.

    I think the 74C373 would suit your needs.

    Alternatively you might be able to do something with the 74HC595.

    Both of the above are limited to 8 outputs. If you need more you would need to use multiple chips.
     
  3. sall

    sall

    51
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    Jan 29, 2010
    Output of 555 to Clock/Latching Control? Also, what would the "Blanking Control" be?

    [​IMG]
     
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
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    Jan 21, 2010
    I have no idea. What are you actually trying to do?
     
  5. sall

    sall

    51
    0
    Jan 29, 2010
    I will be implementing sequential turn signals into my LED project. Just wanted to avoid clutter on the board of the SCR's or diodes. Plus the 74C373 you linked me to less expensive than 4017 + SCRs.

    [​IMG]

    That is the schematic I was going do but would now like to use your suggestion of the 74C373. What do you think?
     

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