A configurable logic circuit arrangement includes at least one multiplexer for switching logic signals. The multiplexer includes one or more data inputs and one or more control signal inputs. The at least one multiplexer (8, 12, 13) can be configured by one or more external control signal transmitter elements of the circuit arrangement during the operation of the circuit in a run-time variable manner by configuration signals that are applied to the control inputs and forwards the logical signals that are applied to the data inputs during operation of the circuit in a run-time variable manner.