Introduction to VLSI Design

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Example: CMOS Inverter Layout

Connecting the Output


1. Draw a Metal-1 rectangle between NMOS and PMOS drain region contacts

Note that the minimum Metal-1 width is 0.9u (3 lambda), thus narrower than the Metal-1 covering the contacts. Also note that the transistors are completely symmetric, the source and drain regions are interchangeable.

Outputs connected



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Last Updated by Ilhan Hatirnaz on 11/7/1998