FSUSB31 Datasheet, PDF (1/14 Pages) Fairchild Semiconductor – Low Power Dual SPST Hi-Speed USB 2.0 (480Mbps) Switch

March 2006
FSUSB31
Low Power Dual SPST Hi-Speed USB 2.0 (480Mbps)
Switch
Features
■ Low On capacitance, 6.0pF (typical)
■ Low On resistance, 6.5Ω (typical)
■ Low power consumption (1µA maximum)
– 10µA maximum ICCT over and expanded control
voltage range (V_IN = 2.6V, V_CC = 4.3V)
■ Wide -3dB bandwidth, > 720MHz
■ 8K I/O to GND ESD protection
■ Power OFF protection when V_CC = 0V, D+ / D- pins can
tolerate up to 4.3V
■ Packaged in:
– Pb-Free 8-lead MicroPak™ (1.6mm x 1.6mm)
– Pb-Free 8-lead US-8 (preliminary)
Applications
■ Cell phone, PDA, Digital Camera, and Notebook
■ LCD Monitor, TV, and Set-top Box
General Description
The FSUSB30 is a Low Power, Dual SPST 2-Port
Hi-Speed USB 2.0 switch. This part is configured as a
single pole, single throw switch and is optimized for
switching or isolating a Hi-Speed (480Mbps) source or a
Hi-Speed and Full Speed (12Mbps) source. The
FSUSB31 is compatible with the requirements of USB2.0
and features an extremely low On Capacitance (C_ON) of
6.0pF. The wide bandwidth of this device (>720MHz),
exceeds the bandwidth needed to pass the 3rd harmonic,
resulting in signals with minimum edge and phase distor-
tion. Superior channel-to-channel crosstalk also mini-
mizes interference.
The FSUSB31 contains special circuitry on the D+ / D-
pins which allows the device to withstand an overvoltage
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 to Ultra-Portable applica-
tions such as cell phones, allowing for direct interface
with the General Purpose I/Os of the baseband proces-
sor. Other applications include port isolation and switch-
ing in portable cell phones, PDAs, digital cameras,
printers, and notebook computers.
Ordering Information
Order Number
Package Number
Package Description
FSUSB31K8X (Preliminary)
FSUSB31L8X
MAB08A
MAC08A
Pb-Free 8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
Pb-Free package per JEDEC J-STD-020B.
Application Diagram
V_CC
Base Band
Processor
or FS USB
Controller
FSUSB31
D+
D–
USB
Connector
OE
HS USB
Controller
MicroPak is a trademark of Fairchild Semiconductor Corporation.
©2006 Fairchild Semiconductor Corporation
1
FSUSB31 Rev. 1.0.3
www.fairchildsemi.com