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Help with 74ls373 Octal latch circuit

Discussion in 'Electronic Design' started by Leo, Oct 6, 2003.

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  1. Leo

    Leo Guest

    I am using a 74ls373 to drive six analog switches. My configuration is
    pretty simple; 6 momentary switches with one side of their contact to +5V
    and the other side the to the D inputs of the latch. A diode comes from each
    of the six switches that combines at the LE pin, and the LE pin is pulled
    low.

    The circuit works OK except for one important operation. I need output #1
    to be "high" when the power to the circuit is applied.

    My question is how to preset an input so that output #1 will be "on" with
    power-up.

    Many thanks.

    Leo C.
     
  2. John Fields

    John Fields Guest

     
  3. John Fields

    John Fields Guest

     
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