Consider the series of CMOS inverters in Figure. The threshold voltages of the n-channel transistors are VTN = 0.8 V, and the threshold voltages of the p-channel transistors are VTP = -0.8 V. The conduction parameters are all equal.
(a) Determine the range of vO1 for which both N1 and P1 are biased in the saturation region.
(b) If vO2 = 0.6 V, determine the values of vO3, vO1, and vI.
