Embodiments of the invention provide a semiconductor memory device. In one embodiment, the invention provides a semiconductor memory device comprising a first row of pads comprising a first plurality of data input/output pads; a second row of pads comprising a second plurality of data input/output pads; and a first input/output multiplexer associated with the first row of pads and adapted to provide first output data only to at least one data input/output pad of the first row of pads, even after a data input/output mode of the semiconductor memory device has changed. The semiconductor memory device further comprises a second input/output multiplexer associated with the second row of pads and adapted to provide second output data only to at least one data input/output pad of the second row of pads, even after the data input/output mode has changed.