thw_mod1_no2

# thw_mod1_no2 - ECE 270 Introduction to Digital System...

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ECE 270 Introduction to Digital System Design Fall 2011 TakeHomaWork for Module 1 – Due 8/31/2011 1. Assume two hypothetical logic families have the following D.C. characteristics: Logic Family “A” V CC = 5 V V OH = 4.4 V V OL = 0.40 V V IH = 3.60 V V IL = 1.60 V V TH = (V OH – V OL )/2 I OH = -4 mA I OL = 4 mA I IH = 0.4 μ A I IL = -0.4 μ A Logic Family “B” V CC = 5 V V OH = 3.3 V V OL = 0.30 V V IH = 2.60 V V IL = 1.60 V V TH = (V OH – V OL )/2 I OH = -400 μ A I OL = 8 mA I IH = 40 μ A I IL = -0.4 mA Can gates from family “A” be used to drive gates from family “B”? Explain your answer by calculating and considering fan-out and DC noise margin. Show your work. [4 points] Fanout A B = _________________________________________________ [4 points] DCNM A B = _________________________________________________ [2 points] Conclusion: _________________________________________________ Name: __________________________________________ Class No: __ __ __ __ - __ Signature:

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thw_mod1_no2 - ECE 270 Introduction to Digital System...

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