A metal-insulator phase transition (MIT) flip-flop employs a selected one of a pair of bi-stable operating states to represent a logic state of the MIT flip-flop. The MIT flip-flop includes an MIT device having a current-controlled negative differential resistance (CC-NDR) to provide the pair of bi-stable operating states. A bi-stable operating state of the pair is capable of being selected by a programing voltage. Once the bi-stable operating state is selected, the bi-stable operating state is capable of being maintained by a bias voltage applied to the MIT device.