Advantages and disadvantages of having a high sink and source for outputs?

Discussion in 'Homework Help' started by David Waddell, Feb 26, 2015.

  1. David Waddell

    Thread Starter New Member

    Dec 3, 2014
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    Can anyone say what the advantages and disadvantages of having a high sink output? and the same for a source output?

    Thanks
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,452
    3,371
    Every output is meant to drive a load. The input pin that is being driven is a load.
    You need to make sure that the requirements of the load are met. To do this you need to examine the datasheet of the load or input device.

    Check this out:

    http://www.ti.com/lit/an/slva485/slva485.pdf

    If this is too much reading, jump to section 7 Conclusion and the two paragraphs before that.
     
  3. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,571
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    What in relation to? TTL/CMOS, PLC, Picmicro?
    Max.
     
  4. David Waddell

    Thread Starter New Member

    Dec 3, 2014
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    its related to TTL/CMOS
     
  5. GopherT

    AAC Fanatic!

    Nov 23, 2012
    6,073
    3,856
    Higher load-driving circuits are generally associated with slower and lower gain than their lower load-driving counterparts (faster and higher gain).

    This assumes circuits (or chips) both are of similar era (moment in time)
     
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