The SN74LV4051APW is a quadruple 2-channel analog multiplexer/demultiplexer from Texas Instruments. The device has two select inputs (S0, S1), four independent channels (A0, A1, B0, B1), and one enable input (E). When Enable (E) is low, data from the four channels (A0, A1, B0, B1) passes to the output pins (Y0, Y1). The select inputs (S0, S1) determine which channel passes to the output pins (Y0 and Y1). The device is powered by a single supply, with a voltage range of 1.65 to 5.5 V, and has a power dissipation of 4 mW.