<p>The SparkFun Multiplexer Breakout provides access to all pins and features of the 74HC4051, an 8-channel analog multiplexer/demultiplexer.</p><p>The 74HC4051 allows you to turn four I/O pins into eight multifunctional, individually selectable signals, which can be used to do everything from driving eight LEDs to monitoring eight potentiometers.</p><p>The 74HC4051 can function as either a multiplexer or a demultiplexer, and it features eight channels of selectable inputs/outputs. The routing of common signal to independent I/O is set by digitally controlling three select lines, which can be set either high or low into one of eight binary combinations.</p><p>One half of the board breaks out the control signals (E, S0-S2) and common input/output (Z). The other side provides access to all eight independent I/O’s (Y0-Y7). Both sides include supply and ground connections (VCC, VEE, GND).</p><p><a href="https://learn.sparkfun.com/tutorials/multiplexer-breakout-hookup-guide" target="_blank">Get started with the 74HC4051 breakout guide</a></p><h2>Features:</h2><ul><li>Switches analog or digital signals</li><li>8 channels controlled by 3 select inputs</li><li>Wide voltage supply range: 2 – 10V</li><li>Bipolar supply support (e.g., ±5V)</li><li>Optional enable input</li><li>Breadboard compatible breakout</li></ul><h2>Documents:</h2><ul><li><a href="https://cdn.shopify.com/s/files/1/0174/1800/files/SparkFun-74HC4051-8-Channel-Mux-Breakout.pdf?11167557158396778831" target="_blank">Schematic</a></li><li><a href="https://cdn.sparkfun.com/datasheets/BreakoutBoards/SparkFun-74HC4051-8-Channel-Mux-Breakout.zip" target="_blank">Eagle Files</a></li><li><a href="https://learn.sparkfun.com/tutorials/multiplexer-breakout-hookup-guide" target="_blank">Hookup Guide</a></li><li><a href="https://cdn.shopify.com/s/files/1/0174/1800/files/74HC_HCT4051.pdf?11167557158396778831" target="_blank">Datasheet</a> (74HC4051)</li><li><a href="https://github.com/sparkfun/74HC4051_8-Channel_Mux_Breakout" target="_blank">GitHub</a></li></ul>
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