Line Interface Unit features 21 independent E1 channels.

Press Release Summary:



Model XRT59L921 performs driver and receiver functions to convert bipolar signals to digital logical levels, and vice versa. It supports capacitive coupled inputs for receivers and balanced interfaces that require transformers on receiver and transmitter sides. Unit provides transmit output pulses compliant with ITU-T G.703 pulse template requirement for 2.048 Mbps (E1) rates, and supports pulse shaping for 75 and 120 W line drivers with individual TX shutdown capacity.



Original Press Release:



Exar Adds Feature-Rich Device Targeting Transport Applications in Cost- Sensitive Emerging Markets



21-Channel E1 Product Joins Industry's Most Extensive and Scalable Line Interface Unit (LIU) Portfolio

FREMONT, Calif., Nov. 13 / - EXAR Corporation (NASDAQ:EXAR), a leading provider of high-performance, mixed-signal silicon solutions for the worldwide communications infrastructure added a new feature-rich device targeting cost sensitive transport applications -- PDH and SDH multiplexers, digital cross-connects, DECT base stations, as well as CSU/DSU equipment -- found in emerging worldwide markets. The XRT59L921, a highly integrated 21-channel E1 solution with reduced power and complexity, is the newest member of one of the industry's most extensive and scalable LIU portfolios.

"Built on the Company's successful T1, E1, and T1/E1/J1 Short Haul/Long Haul (SH/LH) combination LIUs, the XRT59L921 extends the reach of the Exar's E1 portfolio to 21 channels -- answering customer demands," said Al Gharakhanian, vice president of marketing, Network and Transmission Products. "It is an ideal solution for the highest growth emerging markets particularly found in China and Europe where cost reduction has become a necessity."

The XRT59L921 contains 21 independent E1 channels, each of which can perform the driver and receiver functions necessary to convert bipolar signals to digital logical levels, and vice versa. The device supports balanced interfaces that require transformers on the receiver and transmitter sides, as well as supporting capacitive coupled inputs for the receivers.

"This highly integrated solution will enable our networking equipment customers to design systems ranging from high-density cross-connects to pizza- box type systems with enhanced capabilities," said John Demiray, senior director of strategic marketing, Networking and Transmission products. "The XRT59L921 now addresses the most cost sensitive applications where only E1 signals need to be transported."

Product Details

The XRT59L921 provides Twenty-One (21) Independent E1 (CEPT) Line Interface Units (Transmitter and Recovery). It provides transmit output pulses that are compliant with the ITU-T G.703 pulse template requirement for 2.048Mbps (E1) rates. In addition, the XRT59L921 supports pulse shaping for both 75 Ohms and 120 Ohms line drivers with individual TX shut down capacity.

The receiver input accepts transformer coupled 1:1 signals, while the transmitter is coupled to the line using a 1:2 transformer. The same transformer configuration can be used for both balanced and unbalanced interfaces. The device offers Loss of Signal (LOS) detection, which provides an LOS output indication signal with thresholds and delay that comply with the ITU G.775 requirements.

Packages, Prices, Availability and Additional Information

The XRT59L921 is available in a 316-pin STBGA package and operates at 3.3V with 5V tolerant I/O's over the industrial temperature range. In 1,000 piece quantities the XRT59L921 is $21.36. Samples of the part are available now. Additional information on this product can be found at: www.exar.com/product.php?ProdNumber=XRT59L921 and other T1/E1 Products at: www.exar.com/area.php?areaID=2 .

About Exar

Exar Corporation designs, develops and markets high-performance, analog and mixed-signal silicon solutions for a variety of markets including networking, serial communications, clock and timing, and storage. Leveraging its industry-proven analog design expertise and system-level knowledge, Exar delivers to customers a wide array of technology solutions for their current as well as next generation products. The Company is based in Fremont, CA, had fiscal 2006 revenues of $67.0 million, and employs approximately 250 people worldwide. For more information about the Company visit: www.exar.com/ .

Source: Exar Corporation

CONTACT:
Greg Kaufman,
Marketing Communications of Exar Corporation,
+1-510-668-7000

Web site: www.exar.com/

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