The MC74HC4051ADTR2G is a Multiplexer Switch Integrated Circuit from ON Semiconductor. It is a low on-resistance, low voltage, low power CMOS multiplexer/demultiplexer with multiplexed address decoders. The device operates with an analog signal level range of 2–6 volts and a temperature range of -55 to 125°C. It is suitable for use in a wide variety of circuit configuration applications, such as signal multiplexing, signal demultiplexing, address decoding, etc. The device features two pins for addressing, denoted by A and B. It has four sets of data inputs (A, B, C, and D), four sets of outputs (Y0–Y3), a control input (E), and power supply pins (VCC and GND).