Patent ID: 7599237

Claim:
An apparatus for delivering a signal, comprising: 2N signal lines; N precharge units configured to precharge the 2N signal lines; a sense amplifier configured to sense and amplify voltage levels of the signal lines; and a multiplexer configured to select two of the signal tines among the N signal lines and to connect the selected two signal lines to the sense amplifier within a transmission period; wherein the multiplexer is adapted to select at least four of the signal lines among the 2N signal lines and to connect the selected at least four signal lines to the sense amplifier within a preparatory period, and the multiplexer includes N switching units each switching unit being connected to two of the 2N signal lines, the apparatus further comprising: a multiplexer control unit configured to receive a multiplexer control signal and to generate N switching signals for controlling the N switching units, wherein at least two of the switching signals are generated based on logically combining a column address signal and the multiplexer control signal, the multiplexer control signal being activated within the preparatory period.