FSUSB42 — Low-Power, Two-Port, Hi-Speed, USB2.0 (480Mbps) Switch
September 2008
FSUSB42 — Low-Power, Two-Port, Hi-Speed,
USB2.0 (480Mbps) Switch
Features
Low On Capacitance: 3.7pF Typical
Low On Resistance: 3.9Ω Typical
Low Power Consumption: 1μA Maximum
Description
The FSUSB42 is a bi-directional, low-power, two-port,
Hi-Speed, USB2.0 switch. Configured as a double-pole,
double-throw switch (DPDT) switch, it is optimized for
switching between two Hi-Speed (480Mbps) sources or
a Hi-Speed and Full-Speed (12Mbps) source.
The FSUSB42 is compatible with the requirements of
USB2.0 and features an extremely low on capacitance
(C
ON
) of 3.7pF. The wide bandwidth of this device
(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 FSUSB42 contains special circuitry on the switch
I/O pins for applications where the V
CC
supply is
powered-off (V
CC
=0), which allows the device to
withstand an over-voltage condition. This device is
designed to minimize current consumption even when
the control voltage applied to the SEL pin is lower than
the supply voltage (V
CC
). This feature is especially
valuable to ultra-portable 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.
-
15μA Maximum I
CCT
over an Expanded Voltage
Range (V
IN
=1.8V, V
CC
=4.3V)
Wide -3db Bandwidth: > 720MHz
Packaged in 10-Lead UMLP (1.4 x 1.8mm)
8kV ESD Rating, >16kV Power/GND ESD Rating
Over-Voltage Tolerance (OVT) on all USB Ports
Up to 5.25V without External Components
Applications
Cell phone, PDA, Digital Camera, and Notebook
LCD Monitor, TV, and Set-Top Box
IMPORTANT NOTE:
For additional performance information, please contact
analogswitch@fairchildsemi.com.
Ordering Information
Part Number
FSUSB42UMX
Top
Mark
HE
Operating Temperature
Range
-40 to +85°C
Eco Status
Green
Package
10-Lead, Quad, Ultrathin Molded
Leadless Package (UMLP), 1.4 x 1.8mm
For Fairchild’s definition of “green” Eco Status, please visit:
http://www.fairchildsemi.com/company/green/rohs_green.html.
MicroPak™ is a trademark of Fairchild Semiconductor Corporation.
HSD1+
HSD2+
HSD1-
HSD2-
Sel
Control
D+
D-
/OE
Figure 1. Analog Symbol
© 2007 Fairchild Semiconductor Corporation
FSUSB42 • Rev. 1.0.6
www.fairchildsemi.com
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
