CMOS Inverter Schmitt Trigger

Discussion in 'Electronics Resources' started by Starhowl, Jan 16, 2014.

  1. Starhowl

    Thread Starter New Member

    Dec 3, 2013
    25
    0
    In the following papers

    Chapter 18.1 (CMOS Circuit Design, Layout, and Simulation, 3rd Edition) of


    I fail to understand why the potential at the gate of M3 (N3 respectively) becomes V_{DD}-V_{TH3}? Especially the term that the source of it 'floats to' I find most interesting? :confused:

    Update:Could it be that because there is no current flowing through that FET,
    V_{DS3} = V_{TH3}
    ?
     
    Last edited: Jan 16, 2014
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