April 2012

© 2010 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FSUSB73 • Rev. 1.0.2

FSUSB73

3:1 High-Speed USB Multiplexer and Hub Routing Switch

Features

Switch Type

3:1 MUX + Isolation Switch

USB

USB 2.0 High-Speed &

Full-Speed Compliant

6.5

Ω

6pF

ESD (IEC61000-4-2)

15kV (Air), 8kV (Contact)

2.5 to 4.4V

<1µA

9µA

Package

16- Lead UMLP 1.8 x 2.6 x

0.55mm, 0.40mm Pitch

Ordering Information

FSUSB73UMX (UMLP)

Applications

Description

The FSUSB73 is a bi-directional, low-power, high-speed

USB 2.0 3:1 MUX plus one isolation switch. It is optimized

for switching three high-speed (480Mbps) or full / low-speed

USB / UART sources to one USB 2.0 connector. In addition,

the FSUSB73 has an integrated routing USB switch to allow

communication between a USB hub and another processor

without re-enumeration.

Related Resources

Typical Application

Figure 1. Mobile Phone Example

Application

µProcessor

3G

µProcessor

USB Port

FSUSB73

HS-USB 0

HS-USB 1

HS-USB 2

HS-USB 2S

D+

D-

USB HUB

4G

µProcessor