This site contains affiliate links for which we may be compensated.
4051 8 Channel Analog Muxer/Demuxer CMOS Logic IC$1.80
4051 8 Channel Analog Multiplexer/Demultiplexer CMOS (Complementary Metal-Oxide-Semiconductor) logic chips are popular due to their lower power consumption, wider range of power supply voltages (3-15V) than those offered by TTL (Transistor-Transistor Logic) and a reduced need for extraneous circuitry, simplifying the design process and reducing circuit board size.