In modern electronics, multiplexers (MUX) are pivotal in simplifying the design of complex circuits by enabling multiple signals to be routed through a single channel. One of the most versatile MUX chips on the market is the CD74HC4067, a 16-channel multiplexer that offers remarkable flexibility and performance. This article delves into the logic analysis and practical application of the CD74HC4067, providing valuable insights into its operation and circuit design uses.