17.28 In a particular logic-circuit technology, operating with a 1.2-V supply, the basic inverter draws (from the supply) a current of 15 µA in one state and 0 µA in the other. When the inverter is switched at the rate of 250 MHz, the average supply current becomes 60 µA. Estimate the equivalent capacitance at the output node of the inverter.
0.175 pF
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