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Intersil's USB 2.0 Multiplexer Reduces Connectors and Improves Cradle FunctionalityMilpitas, CA, )
The flexibility of the ISL54200 comes from its ability to switch between data sources having different data speeds and signal levels, and to output them through a common connector. When used inside a portable device such as cellphone it alternately allows chips with high-speed (480Mbps) USB circuitry and chips with lower speed UART or Full Speed (12Mbps) USB to communicate through a single connector. This allows access to slower parts of the cellphone product over a common interface. In automotive applications where portable products are often placed in a cradle, a common cradle connector can serve multiple portable products with differing data signaling interface requirements while retaining a common USB cable connection to the automobile electronics. And, when used in a laptop docking station it allows a single USB Host connection to provide two data ports serving external devices having High Speed or Full Speed USB signaling capability.
Beyond flexibility, the ISL54200 also provides unmatched performance. The 800MHz of bandwidth and superior RON flatness delivers a wider eye opening for improved signal transmission. The industry-leading 80nanoAmps of quiescent supply current significantly lowers the battery drain, while the 2.7V to 5.5V supply voltage range allows a wider range of rail-to-rail signaling protocols while eliminating the need for an additional LDO power source.
Applications that will benefit from Intersil’s advanced technology include MP3 and personal media players, cell phones, PDAs, laptop and Digital Camera docking stations and cradle devices for cellphone, MP3 player and portable automotive or marine GPS devices.
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