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74ls14 instead of 74hc14 for data cable? Plz help!

Discussion in 'Electronic Design' started by Mike, Jul 16, 2003.

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  1. Mike

    Mike Guest

    I'm not too good with electronic components. That is I don't
    understand much about them, but I can follow instructions well and I
    got excellent soldering skills ;). I'm trying to make a data cable
    for my cell phone but I have a slight problem that only you guys can
    help me with. The schematic calls for a 74hc14 IC, but all I can get
    my hands on locally is a 74ls14. I am unsure of the difference, so
    could someone tell me if they work the same and if there are any
    differences. Thanks.
  2. Get an HC14, even if you have to mail-order it.

    Best regards,
    Spehro Pefhany
  3. Leon Heller

    Leon Heller Guest


    A pull-up resistor would solve that problem.

  4. Sure, then we have to worry about loading (is there an RC on the
    input?), supply voltage range (2-6V for HCMOS), different input
    thresholds etc. etc.

    Best regards,
    Spehro Pefhany
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