FSUSB31_08 Datasheet, PDF (1/14 Pages) Fairchild Semiconductor – Low-Power, Single-Port, High-Speed USB 2.0 (480Mbps) Switch

September 2008
FSUSB31
Low-Power, Single-Port, High-Speed USB 2.0 (480Mbps)
Switch
Features
■ Low On Capacitance: 3.7pF (Typical)
■ Low On Resistance: 6.5Ω (Typical)
■ Low Power Consumption: 1µA (Maximum)
– 10µA Maximum I_CCT Over an Expanded Control
Voltage Range: V_IN = 2.6V, V_CC = 4.3V
■ Wide -3dB Bandwidth: > 720MHz
■ 8kV I/O to GND ESD Protection
■ Power-off Protection When V_CC = 0V, D+ / D- Pins Can
Tolerate up to 5.5V
■ Packaged in:
– 8-lead MicroPak™ (1.6 x 1.6mm)
– 8-lead US8
– 8-lead Ultrathin MLP (1.2 x 1.4mm)
Applications
■ Cell Phone, PDA, Digital Camera, and Notebook
■ LCD Monitor, TV, and Set-top Box
Related Resources
■ AN-6022 Using the FSUSB30/31 to Comply with
USB 2.0 Fault Condition Requirements
Description
The FSUSB31 is a low-power, single-port, high-speed
USB 2.0 switch. This part is configured as a double-pole,
single-throw switch and is optimized for switching or iso-
lating a high-speed (480Mbps) source or a high-speed
and full-speed (12Mbps) source. The FSUSB31 is com-
patible 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 band-
width needed to pass the third harmonic, resulting in sig-
nals with minimum edge and phase distortion. Superior
channel-to-channel crosstalk minimizes interference.
The FSUSB31 contains special circuitry on the D+ / D-
pins that allows the device to withstand an over-voltage
condition. This device is also designed to minimize cur-
rent consumption even when the control voltage applied
to the OE pin is lower than the supply voltage (V_CC). This
feature is especially valuable for mobile applications,
such as cell phones, allowing direct interface with the
general-purpose I/Os of the baseband processor. Other
applications include port isolation and switching in porta-
ble cell phones, PDAs, digital cameras, printers, and
notebook computers.
Ordering Information
Part Number
FSUSB31K8X
FSUSB31L8X
FSUSB31UMX
Package
MAB08A
MAC08A
UMLP08A
Eco Status
Green
RoHS
Green
Package Description
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide
8-Lead MicroPak, 1.6mm Wide
8-Lead, Ultrathin Molded Leadless Package (UMLP), 1.2 x 1.4mm
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Application Diagram
V_CC
Base Band
Processor
or FS USB
Controller
FSUSB31
D+
D–
USB
Connector
OE
HS USB
Controller
Figure 1. Typical Application Diagram
MicroPak™ is a trademark of Fairchild Semiconductor Corporation.
© 2006 Fairchild Semiconductor Corporation
FSUSB31 Rev. 1.0.8
www.fairchildsemi.com