Products in the configurable logic gate family perform elementary logic operations on individual logic signals in a fashion similar to standard logic gates, but without the limitation of being constrained to one specific function such as AND, NAND, etc. They are commonly implemented using a small number of logic gates internally, selected and interconnected to allow the overall logic function that is realized to be configured by the choice of which among several inputs the operating data is applied to, and the logic state to which any unused inputs are driven.