17.14 Use the method of average currents to estimate tPHL, tPLH, and tP of a CMOS inverter fabricated in a 65-nm process for which Vtn = |Vtp| = 0.35 V, VDD = 1 V, μnCox = 470 µA/V2, and μpCox = 190 µA/V2. The inverter has (W/L)n = 1.5 and (W/L)p = 3, and the total capacitance at the inverter output node is 10 fF. Also, find the theoretical maximum frequency at which this inverter can be operated.
tPHL = 34.4 ps; tPLH = 42.6 ps; tp = 38.5 ps; fmax = 13 GHz
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