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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Implement the following expression in a full static CMOS logic fashion using no more than 10 transistors:
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2. Consider the circuit of Figure 6.1.

What is the logic function implemented by the CMOS transistor network? Size the NMOS and PMOS devices so that the output resistance is the same as that of an inverter with an NMOS W/L = 4 and PMOS W/L = 8.
b. What are the input patterns that give the worst case tpHL and tpLH. State clearly what are the initial input patterns and which input(s) has to make a transition in order to achieve this maximum propagation delay. Consider the effect of the capacitances at the internal nodes.
c. Verify part (b) with SPICE. Assume all transistors have minimum gate length (0.25mm).
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