November 2009

© 2007 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FSA110 Rev. 1.0.2

Click to see this datasheet

in Simplified Chinese!

FSA110 — Audio and Wired-OR USB2.0 Hi-Speed

(480Mbps) Switch with Negative Signal Capability and

Built-in Termination

Features

6pF Typical Switch Off Capacitance for HS USB

2.5Ω Typical On Resistance for Audio Signaling

Negative-Swing-Capable Audio Channel

Automatic USB Detection Available

Power-Off Protection on the D+/R, D-/L Ports

Flow-Through Pin Out Eliminates PCB Vias

Built-In Termination on Unselected Audio Paths

Inhibits Audio Pop

Applications

Cell Phone, PDA, Digital Camera, and Notebook

LCD Monitor, TV, and Set-Top Box

Description

The FSA110 is a Double-Pole, Single Throw (DPST)

switch that combines a low-distortion audio path with

low off capacitance for USB applications. This

configuration is ideal for wired-OR configurations,

enabling shared USB2.0 Hi-Speed (HS) and audio on a

single connector. The architecture is designed to allow

audio signals to swing below ground so a common USB

and headphone jack can be used for personal media

players and portable peripheral devices.

The FSA110 is configured for default USB transfer,

which gives the user control of when the audio path is

enabled. The audio path defaults to audio mute and is

enabled with /OE. The FSA110 includes a power-off

signal isolation.

IMPORTANT NOTE:

For additional performance information, please contact

Ordering Information

Part

Number

Top Mark

Eco Status

Package Description

FSA110K8X

A110

Green

8-Lead US8, JEDEC MO-187, Variation CA, 3.0mm Wide Package

FSA110UMX

GZ

Green

10-Lead Quad, Ultrathin MLP, 1.4 x 1.8mm

/OE

R

L

D+/R

D-/L

Control

Block

Rpu

Figure 1.

Analog Symbol