2Static CMOS CircuitsIn Static CMOS circuits with n inputs, 2n transistors are needed.nMOS block is a dual of the pMOS block.What ever is in series in nMOS, appears in parallel in pMOS and vice versa.CMOS gates consume power only during the transition of inputs.
3Static complementary gate structure Pull-up and pull-down networksVDDpull-upnetworkoutinputsPull-downnetworkVSS7
4Pull-up/pull-down network design Pull-up and pull-down networks are duals.To design one gate, first design one network, then compute dual to get other network.13
16Problems Design a CMOS circuit to implement the logic Y = A'B' + B'C + C'AMake a 2 input CMOS XOR gate to implementY = A B.CMOS XOR and XNOR gates are similar. Just one of the input pairs (A and A' are reversed).
18Stick diagrams A stick diagram is a cartoon of a layout. Does show all components/vias (except possibly tub ties), relative placement.Does not show exact placement, transistor sizes, wire lengths, wire widths, tub boundaries.