NL3S22 USB 2.0 + Audio Switches onsemi NL3S22 USB 2.0 + Audio Switches are double-pole/double-throw (DPDT) analog switches for routing high-speed differential data and audio. The high-speed data path and differential channels are compliant with High-Speed USB 2.0, Full Speed USB 1.1, Low-Speed USB 1.0, and any generic UART protocol. The onsemi NL3S22 multipurpose audio path can pass signals with negative voltages as low as 2V below ground and features shunt resistors to reduce Pop and Click noise in the audio system.