In some embodiments, a logic circuit is provided that has a plurality of gates with gate inputs. A pair of input capacitors is coupled between the differential voltage input and the differential output and a pair of reference capacitors is coupled between the differential reference voltage input. At least one fold line is provided in the pad of material between the first end and the second end. The startup circuit includes a second portion including a current mirror component and a feedback component. The adjustment portion is adapted for selectively adjusting the receiver in accordance with stored historic observation data. This device is useful when it is known that a portion or portions of the compare data inputs vary infrequently.