Wire connecting the devices (nmos, pmos) are normally referred to as interconnects. Interconnects are very important, almost 70 percent chip area is consumed by interconnects. Interconnects increase circuit delays due to resistance and capacitances associated with them. Coupling capacitances induces crosstalk delay effects. Long wires induces inductive coupling due to inductance associated with them. Electric current flowing through interconnects is analogous to water flowing through leaky pipe. This lecture helps to build concepts around CMOS interconnects.
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