The FCT2257T has four identical two-input multiplexers that select four bits of data from two sources under the control of a common data Select input (S). The I0 inputs are selected when the Select input is LOW and the I1 inputs are selected when the Select input is HIGH. Data appears at the output in true non-inverted form for the FCT2257T. On-chip termination resistors have been added to the outputs to reduce system noise caused by reflections. The FCT2257T can be used to replace the FCT257T to reduce noise in an existing design. The FCT2257T is a logic implementation of a four-pole, two-position switch where the position of the switch is determined by the logic levels supplied to the select input. Outputs are forced to a high-impedance "OFF" state when the Output Enable input (OE) is HIGH. All but one device must be in the high-impedance state to avoid currents exceeding the maximum ratings if outputs are tied together. Design of the output enable signals must ensure that there is no overlap when outputs of three-state devices are tied together.