FSA110UMX_F113

Specialized Overview

The FSA110UMX_F113 is a Double-Pole, Single Throw (DPST) switch integrating low-distortion audio paths with low off-capacitance for USB applications. It supports wired-OR configurations to share USB 2.0 Hi-Speed (480Mbps) and stereo audio on a single connector. The device handles negative-swing audio signals without coupling capacitors and includes built-in termination resistors on unselected audio paths to inhibit audio pop. It features power-off protection on common ports and defaults to USB mode via an internal pull-up on the /OE pin.

Specialized Feature Summary

• Combines low-distortion audio switching with low off-capacitance for high-speed USB data integrity
• Supports negative-swing audio signaling to eliminate large coupling capacitors
• Includes built-in termination resistors on unselected audio paths to reduce audio pop artifacts
• Provides power-off protection on common ports to guarantee signal isolation when VCC is zero

Specialized Applications

• Cell phones and PDAs requiring shared USB and headphone connectors
• Digital cameras and notebook computers with multimedia interfaces
• LCD monitors, TVs, and set-top boxes utilizing combined connectivity

Specialized Procurement Notes

Verify the specific ordering suffix against current ON Semiconductor databases, as Fairchild part numbers containing underscores may have been converted to dashes during system integration. Confirm availability status directly with authorized distributors, as legacy components may be subject to discontinuation or limited supply constraints.

Specialized Selection Notes

Select this component for designs requiring a single connector to handle both USB 2.0 Hi-Speed data and stereo audio simultaneously. Ensure the application environment operates within the recommended voltage range of 2.7V to 4.3V. Verify that the package type matches the PCB layout requirements, specifically choosing between the 8-Lead US8 or 10-Lead UMLP variants based on space constraints.

Specialized Part Context

The FSA110 series was originally developed by Fairchild Semiconductor before its acquisition by ON Semiconductor. The product line represents a specialized analog switch solution designed to simplify board layouts in portable electronics by merging separate audio and USB switching functions into a single compact integrated circuit.

Specialized Replacement Considerations

FSA110K8X