The 74CBTLV3253 provides a dual 1-of-4 high-speed multiplexer/demultiplexer with two common select inputs (S0, S1) and two output enable inputs (1OE, 2OE). The low ON resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. When pin nOE= LOW, one of the four switches is selected (low-impedance ON-state) with pins S0 and S1. When pin nOE= HIGH, all switches are in the high-impedance OFF-state, independent of pins S0 and S1.