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This literature is subject to all applicable copyright laws and is not for resale in any manner.FSA321 USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability March 2013 FSA321 USB2.0 Hi-Speed (480Mbps) and Audio Switches with Negative Signal Capability and Built-in Termination on Unselected Audio Paths Features Description The FSA321 is a Double-Pole, Double Throw (DPDT) Audio: 1.8 Typical On Resistance multiplexer that combines a low-distortion audio and a HS-USB: 8 Typical On Resistance USB2.0 High-Speed (HS) switch path. This configuration enables audio and USB data to share a common HS-USB: 5pF Typical On Capacitance connector port. The architecture is designed to allow USB Path -3db Bandwidth: > 720MHz audio signals to swing below ground. This means a common USB and headphone jack can be used for Negative Swing Capable Audio Channel personal media players and portable peripheral devices. Power-off Protection on Common D+/R, D-/L Ports Since USB2.0 is an industry standard for shared data- Automatic USB Detection (Configurable) path in portable devices, FSA321 can be configured for automatic V detection. The FSA321 includes a BUS OVT on all I/O Ports power-off feature as well as over-voltage tolerance to Flow-Through Pin Out Eliminates PCB Vias minimize current consumption when V exceeds V . SW CC Built-In Termination on Unselected Audio Paths Typical applications involve switching in portables and to Inhibit Audio Pop consumer applications, such as cell phones, digital cameras, and notebooks with hubs or controllers. Applications . MP3, Cell Phone, PDA, Digital Camera, and Notebook LCD Monitor, TV, and Set-Top Box Ordering Information Package Part Number Top Mark Package Description Number FSA321UMX MLP010A GL 10-Lead Quad, Ultrathin Molded Leadless Package (MLP), 1.4 x 1.8mm Figure 1. Analog Symbol 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA321 Rev 1.0.6