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Unformatted text preview: on-resistance of 5 KOhms. The total source and drain (diffusion) capacitances of an n-channel transistor are 5 fF each. The parasitic (wiring, etc.) capacitances are shown lumped at the internal nodes. The output load capacitance shown (50 fF) includes the diffusion capacitance of the P-Network, wiring capacitances, and the driven gate capacitances. (a) Assume that all load and internal capacitances have been charged to V DD . Which input input vector will result in the longest t pdf ? Explain your answer. (b) Assuming all the capacitors are initially charged to V DD , use the Elmore delay approximation to find the value of t pdf for the input vector ABCDE = 10111....
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- Spring '10