Draw CMOS inverter characteristic and explain it.
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Characteristics: The characteristics of CMOS inverter depend on the charging and discharging of the load capacitance CL through the PMOS and NMOS transistors respectively. The finite time taken for this charging and discharging is the reason for the delayin circuits. 

Rise time (tr) The time for a waveform to rise from 10% to 90% of its steady-state value Fall time (tf) The time for a waveform to fall from 90% to 10% steady-state value Delay time (td) The time difference between input transition (50%) and the 50% output level. (This is the time taken for a logic transition to pass from input to output High-to-low delay (tdf) Low-to-high delay (tdr)


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