Implementing a generic logic function in CMOS

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Presentation transcript:

Implementing a generic logic function in CMOS IUCEE Workshop: VLSI Design July 7th to 11th 2008 Tutor: Prof. A. Mason Implementing a generic logic function in CMOS By:Ms.SAVITA.SONOLI AP & Head in IT Dept PDIT,HOSPET KARNATAKA Email: savitachitriki@gmail.com

Pre-requirements Parameters nMOS pMOS Symbol OFF Open Switch ON Switching Characteristics Vin=1 ON / Closed Switch OFF / Open Switch Vin=0 OFF Open Switch ON Closed Switch Pass Passes good Low (0) Passes good High (1)

Pre-requirements DeMorgan’s Rules

Pre-requirements

Learning objectives Implementation of logic gates in COMS NOT AND OR NOR NAND

NOT GATE

NOR GATE Inverting the inputs we can build AND gate

NAND GATE Inverting the inputs we can build OR gate

Simplified TRUTH-TABLE Inputs Outputs A B NAND OR NOR AND 1

HOMEWORK Implement XOR and XNOR gates.

Acknowledgement Prof.Mason Group mates

Thank you