s07-quiz2-solution

s07-quiz2-solution - ECE 108 Qurz #2 Wednesday,May 2 Spring...

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Unformatted text preview: ECE 108 Qurz #2 Wednesday,May 2 Spring 2007 You are reminded that academic dishonesty will NOT be tolerated. You have 50 minutes to complete the quiz. This is a closed book exam. No reference material of anv kind can be used. Question Your points Out of I 10 2 10 Total 20 Name Solu l-;on Student ID Signature Useful relations i-r sr:s,(*) ilh y x j : t b j l. (10 points) For the CMOS combinational logic circuit below, assume that (a) the threshold voltageof thenMOstransistorsis Vl andthatof thepMOSis l%1, O)A: D: I andB:0 initially, and (c) the capacitance C, is fully charged. (a) (zpoints) Determine the logic function implemented. (b) (4 points) Consider the following two sequences of events. i . A I @ t : 0 f o l l o w e d b y - 4 t @ t : 1 0 n s ( w h i l e B : 0 a n d D : I ) i i . , J @ t : 0 f o l l o w e d b y D I @ t : 1 0 n s ( w h i l e B : 0 a n d A : l ) What are the voltage levels at node n @ t : 5 ns for both cases? Assuming that the propagation delay tppg.is defined as the delay from the last input transition to Y propagation delay tppg....
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This note was uploaded on 08/30/2010 for the course ECE ECE 108 taught by Professor Kennethyun during the Spring '09 term at UCSD.

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s07-quiz2-solution - ECE 108 Qurz #2 Wednesday,May 2 Spring...

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