The TK15211M is an Analog Switch IC that was developed for audio frequency applications. The function of the IC is to select one output from two input channels. The channel selection is controlled by a low level. The TK15211M operates from a single power supply. The input bias circuitry is provided externally, making the device suitable for various signal switching applications, especially Hi-Fi devices. The TK15211M offers a wide operating voltage range with simple associated circuitry.