December 2008

© 2008 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FSUSB43 • Rev. 1.0.1

FSUSB43 — Low-Power, Two-Port, High-Speed,

USB2.0 (480Mbps) Switch

Features

Over-Voltage Tolerance (OVT) on all USB Ports

up to 5.25V without External Components

Low On Capacitance: 3.7pF Typical

Low On Resistance: 3.9Ω Typical

Low Power Consumption: 1μA Maximum

-

Wide -3db Bandwidth: > 720MHz

Packaged in 10-Lead MicroPak™ (1.6 x 2.1mm)

8kV ESD Rating, >16kV Power/GND ESD Rating

-

D+/D- Pins Tolerate up to 5.25V

Applications

Cell phone, PDA, Digital Camera, and Notebook

LCD Monitor, TV, and Set-Top Box

IMPORTANT NOTE:

For additional performance information, please contact

Description

The FSUSB43 is a bi-directional, low-power, two-port,

high-speed, USB2.0 switch. Configured as a double-

pole, double-throw (DPDT) switch, it is optimized for

switching between two high-speed (480Mbps) sources

or a high-speed and full-speed (12Mbps) source.

The FSUSB43 is compatible with the requirements of

USB2.0 and features an extremely low on capacitance

(720MHz) exceeds the bandwidth needed to pass the

third harmonic, resulting in signals with minimum edge

and phase distortion. Superior channel-to-channel

crosstalk also minimizes interference.

The FSUSB43 contains special circuitry on the switch

withstand an over-voltage condition. This minimizes

current consumption even when the control voltage

applied to the SEL pin is lower than the supply voltage

applications, such as cell phones, allowing for direct

interface with the general-purpose I/Os of the baseband

processor. Other applications include switching and

connector sharing in portable cell phones, PDAs, digital

cameras, printers, and notebook computers.

HSD1+

HSD2+

HSD1-

HSD2-

D-

D+

Control

Sel

/OE

Figure 1. Analog Symbol

Ordering Information

Part Number

Top Mark

Operating Temperature Range

Eco Status

Package

FSUSB43L10X

JH

-40 to +85°C

Green

10-Lead MicroPak™ 1.6 x

2.1mm, JEDEC MO-255B

MicroPak™ is a trademark of Fairchild Semiconductor Corporation.