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Updated: July 8th, 2008 05:26 PM CDT

National Semiconductor Introduces Temperature LVDS Transmitter and Receiver Family

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via PRNewswire

SANTA CLARA, Calif., Jan. 30 /PRNewswire-FirstCall/ -- National Semiconductor Corporation (NYSE: NSM) today introduced five new extended temperature single and dual transmitters and receivers to the company's industry-leading portfolio of low-voltage differential signaling (LVDS)products. The general-purpose LVDS physical layer devices (PHYs) areoptimized for driving signals through cable harnesses in systems operating inharsh, high-temperature environments, such as automotive, industrial and military applications.

The DS90LV011AH transmitter, DS90LT012AH receiver, DS90LV027AH dual transmitter, DS90LV028AH dual receiver and DS90LV049H integrated dual transceiver are guaranteed to operate in environments up to 125 degrees C. Operating at very low power, the five new products deliver superior LVD Sperformance characteristics, data rates up to 400 Mbps and excellent noise immunity.

"Designers of high-performance industrial systems were once limited tolower-speed communication standards like RS-485 and CAN for data transport," said Jeff Waters , product line director for the Interface division at National. "National's new extended temperature LVDS PHYs will enable tentimes the level of performance of lower-speed communication standards, driving data rates up to 400 Mbps over cables in very hot and electro-magnetically noisy environments."

In a typical application, the LVDS PHYs improve signal integrity by translating the single-ended control and data signals from sensors into LVDS signals for transmitting to the digital processor, typically an FPGA or ASIC. In automotive or industrial systems where electrical noise is often unavoidable, LVDS is the best signaling technology choice because of its superior noise immunity and error-free performance.

Technical Features of the Extended Temperature LVDS PHYs

The five new extended temperature single and dual transmitters and receivers support the differential LVDS interface standard from -40 degrees Cto +125 degrees C. The DS90LV011AH transmitter, DS90LT012AH receiver,DS90LV027AH dual transmitter, DS90LV028AH dual receiver and DS90LV049H integrated dual transceiver functions use the LVDS analog interface to providea high-performance signal path that transfers digital information. In addition, the DS90LT012AH features an integrated LVDS input termination to save board space. The DS90LV027AH and DS90LV028AH feature a flow-through pin-out to simplify board layout.

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