High-Speed Multiplexer allows sharing of USB host port.
August 31, 2009 -
Operating from single 1.8-3.3 V supply, Model ISL54222A enables 2 USB 2.0 high-speed interface transceivers to share single USB connector. Bidirectional unit features HBM ESD performance greater than 12 kV on I/O terminals and internal charge pumps that lower switch resistance and open USB eye for optimal performance at 480 Mbps. Switches rated at 5.5 W can pass USB full-speed data signals ranging from 0-3.6 V and USB high-speed data signals ranging from 0 V to 400 mV.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Intersil Corporation
1001 Murphy Ranch Rd.
Milpitas, CA, 95035
USA
Intersil's New High-ESD, Ultra-Low Voltage, USB 2.0 High-Speed Multiplexer in Tiny Package Offers Unparalleled Performance and Flexibility in Portable Devices
Cost-Effective Charge-Pump Enabled ISL54222A Provides Capability for two USB 2.0 High-Speed Interface Transceivers to Share a Low-Capacitance, High-Bandwidth Path
MILPITAS, CA -- July 27, 2009 - Intersil Corporation (NASDAQ Global Select: ISIL), a world leader in the design and manufacture of high-performance analog and mixed-signal semiconductors, today introduced a new integrated circuit that offers industry-leading features for portable products where internal USB high-speed ports may need to share a single USB connector. The device is also bidirectional and allows sharing of a host USB port between multiple outputs such as in desktop or laptop computers, portable mini-printers or docking stations.
The ISL54222A is a single-supply USB 2.0 high-speed multiplexer that can operate from a single 1.8V to 3.3V supply. In addition, the ISL54222A features Human Body Model (HBM) electrostatic discharge (ESD) performance of >12kV on input-output (I/O) terminals. This combination of low supply voltage and high ESD protection makes it extremely flexible and robust for applications such as SmartPhones, MP3 players, personal navigation devices and digital cameras.
The product features internal charge pumps that lower switch resistance and open the USB eye for better performance at 480 Mbps. It contains two SPDT (Single Pole/Double Throw) switches configured as a DPDT. The part was designed for switching or routing of USB high-speed signals and/or USB full-speed signals in many types of portable battery powered products.
Fail-safe operation provides low switch leakage when the power is off, which prevents the device from being accidentally turned on while in the power-down state. Power-saving output-enable control allows all switches to be open when no USB interface is in use, which reduces power consumption to less than 1µA. Low Ron and low-capacitance switches meet USB requirements while providing operating margins for noise and cable reflections. Able to tolerate over-voltages beyond the supply rails, the ISL54222A also meets USB 2.0 short-circuit requirements without needing additional external components.
The 5.5-ohm switches can swing rail-to-rail and were specifically designed to pass USB full-speed data signals that range from 0V to 3.6V and USB high-speed data signals that range from 0V to 400mV with a single supply as low as 1.8V. They have high bandwidth and low capacitance to pass USB high speed data signals with minimal distortion.
Packaging, Pricing and Availability
The ISL54222A is available now in 10 Ld µTQFN, TQFN and MSOP packages. In 10-Ld MSOP tape-and-reel option, the product is priced at $0.52 per 1000 units. In 10-Ld 1.8 x 1.4 mm µTQFN tape-and-reel option, the cost is $0.52 per 1000 units. The price for 10 Ld TQFN tape-and-reel is $0.52. In 10 lead 2.1 x 1.6 mm µTQFN tape-and-reel, the pricing is $0.52 per 1000 units. It operates over a temperature range of -40 to +85 degrees C.
For more information, please visit: http://www.intersil.com/products/devi....
To view a high-resolution downloadable photo, please visit: http://www.intersil.com/pressroom/pho....
About Intersil
Intersil Corporation is a leader in the design and manufacture of high-performance analog and mixed signal semiconductors. The Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, other handheld systems, and notebooks. Intersil's product families address power management functions and analog signal processing functions. Intersil products include ICs for battery management, hot-plug controllers, linear regulators, power sequencers, supervisory ICs, bridge drivers, PWM controllers, switching DC/DC regulators, Zilker Labs Digital Power ICs and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; D2Audio products; video and high-performance operational amplifiers; high-speed data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and radiation-hardened applications. For more information about Intersil or to find out how to become a member of our winning team, visit the Company's web site and career page at www.intersil.com.
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