a logic gate comprises a first switch , a second switch , a data network and a keeping circuitry . the first switch is adapted to connect a logic node to a first potential responsive to a transition of an enabling signal . the second switch is adapted to connect the logic node to a second potential via an electrical path responsive to a transition of the enabling signal . the data network is serially connected within the electrical path . the keeping circuitry comprises third and fourth switches serially connected between the logic node and the first potential and being controllable separately from each other , the third switch being adapted to be closed in case a potential on the logic node assumes the first potential and to be opened in case the potential on the logic node assumes the second potential .