A single product term with an inverted output that feeds back into the Logic Array Block (LAB) of a MAX^® 3000 or MAX 7000 device.

An uncommitted expander product term that can be shared with other logic cells in the same LAB is called a shareable expander; a product term that has been shared in this manner is called a shared expander.

An expander product term that is "borrowed" from an adjacent logic cell in the same LAB is called a parallel expander.