Overview

The FSA221UMX is a 10-Lead Quad, Ultrathin Molded Small Outline Package (MLP) from Fairchild Semiconductor Corporation. It is designed for USB2.0 High-Speed and Audio Switches with Negative Signal Capability.

Key Features

• HS-USB: 4Ω Typical On Resistance
• HS-USB: 4.5pF Typical On Capacitance
• Audio: 3Ω Typical On Resistance
• -3db Bandwidth: > 720MHz
• Low Power Consumption
• Power-off Protection on Common D+/R, D-/L Ports
• Automatically Detects Vbus for Switch Path Selection

Applications

• Cell Phone
• PDA
• Digital Camera
• Notebook
• LCD Monitor
• TV
• Set-Top Box

Description

The FSA221 is a Double-Pole, Double Throw (DPDT) multiplexer that combines a low-distortion audio and a USB2.0 High-Speed (HS) switch path. This configuration enables audio and USB data to share a common connector port. The architecture is designed to allow audio signals to swing below ground, meaning a common USB and headphone jack can be used for personal media players and portable peripheral devices.

Ordering Information

• Part Number: FSA221UMX
• Package Number: UMLP10A
• Top Mark: GL
• Package Description: 10-Lead Quad, Ultrathin MLP, 1.4 x 1.8mm

Pin Assignments and Descriptions

• Vaudio: Power supply (Audio)
• Vbus: Power supply (USB) and auto USB switch-path select
• ASel: Audio select to override auto USB detect when VAUDIO supply is present
• D+, D-: USB data bus input sources
• R, L: Audio right and left input sources
• D+/R, D-/L: USB and audio common connector ports

Electrical Characteristics

• Typical operating conditions and absolute maximum ratings for supply voltages, input clamp diode current, switch I/O current, and other parameters are specified in the datasheet.