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What's the difference?

Discussion in 'Electronic Components' started by Theo, Sep 22, 2005.

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  1. Theo

    Theo Guest

    Pardon my ignorance, but I know little about the
    different "families" of digital TTL chips.
    Can anyone please explain what the chief operating differences are (if any)
    between a 74LS164 and a 74HC164?
    Any assistance will be greatly appreciated.
    Please reply soon.
     
  2. Pick a manufacturer that makes both, pull up the datasheets, and compare
    typical, min, and max values for:

    - supply voltage
    - quiescent supply current
    - switching time
    - propagation time
    - input lo/hi threshold
    - output fanout
    - output lo and hi voltages
    - output current capability
    - input current
     
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