An integrated circuit (IC) including at least one combinational logic
path. The features in the combinational logic path are self compensating
for out-of-focus effects. In particular, field effect transistor (FET)
gates may be iso-focally spaced such that the gate (critical dimension)
may move with changing focus, but the gate length remains the same.
Alternately, logic circuits in a path may self-compensate for focus
effects on individual circuits.