April 2012

© 2010 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FSUSB74 • Rev. 1.0.2

FSUSB74

4:1 High-Speed USB Multiplexer/Switch

Features

Switch Type

4:1

USB

USB 2.0 High–Speed Compliant

USB 2.0 Full-Speed Compliant

6.5

Ω

7.5pF

ESD (IEC61000-4-2)

15kV (Air)

8kV (Contact)

2.7 to 4.4V

<1µA

9µA

Package

16- Lead UMLP 1.80 x 2.60 x

0.55mm, 0.40mm Pitch

16-Lead MLP 3 x 3 x 0.7mm,

0.5mm Pitch

Ordering Information

FSUSB74UMX (UMLP)

FSUSB74MPX (MLP)

Description

The FSUSB74 is a bi-directional, low-power, high-speed

USB 2.0 4:1 MUX. It is optimized for switching from four

high-speed (480Mbps) sources or any combination of high-

speed and full-/low-speed USB/UART sources to one USB

2.0 connector.

Applications



MP3 Portable Media Players



Cellular Phones, Smart Phones



Netbooks, Mobile Internet Devices (MID)

Related Resources

Typical Application

Figure 1. Mobile Phone Example

4:1

MUX

4G

µProcessor

3G

µProcessor

PMIC

Application

µProcessor

USB Port

FSUSB74

HS-USB #1

HS-USB #2

HS-USB #3

HS-USB #4

D+

D-