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Simple TTL question

Discussion in 'Electronic Basics' started by Tim Klinger, Feb 5, 2004.

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  1. Tim Klinger

    Tim Klinger Guest

    I am trying to hook up a 7400N quad NAND chip to use as a debouncer
    for a switch and am running into a problem I don't understand. When I
    provide power to the chip (pin 7 to ground, pin 14 to +5V) and wire
    pins 1 and 2 to ground, I only measure 3V at pin 3. Shouldn't it be
    5V or close to it? I'm new to this racket so any pointers would be
    greatly appreciated.

    Thanks,
    Tim Klinger
     
  2. XandMS

    XandMS Guest

    This is decided by TTL characteristic, if you want to get 5v output, you
    must use CD4011 to replace 7400
     
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