Standard "Logic" process usually contains the set of at least two types of transistors: "Thin" - for lower voltage (usually 1.8V, ~30A thickness) and "Thick" - for higher voltage (3.3 - 5V, ~70A & 120A thickness). In case of "thick" transistor min channel length is ~.3um for 3.3V devices and .5-.6um for 5V.