Exar Introduces Industry’s First 14-Channel Line Interface Units

4/8/2003 - Exar Corporation (Nasdaq: EXAR), a leading provider of high-performance, mixed-signal silicon solutions for the worldwide communications infrastructure announced the industry’s first 14-channel physical-layer LIUs, extending its product offering which leverages the Company’s innovative R3 (Reconfigurable, Relayless Redundancy) Technology. These new 14-channel devices ( XRT83L314 and XRT83SL314 ) are targeted at Multi-Service Provisioning Platforms (MSPPs), access devices, media gateways, routers, and frame relay access devices.

Why 14-Channels?
A typical multiplexer application involves multiplexing/demultiplexing of either 28 T1 channels, or 21 E1 channels into DS3/E3. Until now, this was implemented using either four 8-channel T1/E1 LIUs or a combination of three 8-channel LIUs and one 4-channel LIU. This caused a great deal of design complexity and also limited the ability to mux/demux a larger number of T1/E1 channels due to board space. The 14-channel devices not only offer a simple and easy way to higher density T1/E1 channels, but also employ Exar’s R3 Technology.

Exar’s R3 Technology (Reconfigurable, Relayless, Redundancy) delivers key innovative features to customers designing T1/E1/J1 interface cards. The devices are Reconfigurable with integrated terminations supporting all common T1/E1/J1 line impedances (75/100/110/120 ohms) enabling customers to build one board with a single bill-of-materials. Also, the series employs Relayless Redundancy eliminating the need for external relays for 1:1 and 1+1 applications by establishing a back-up channel or card that can be brought on-line in the event of failure.

“The introduction of this highly integrated LIU is another important step in our strategy to leverage our mixed-signal design expertise and further expand our robust industry-leading T1/E1/J1 product portfolio,” said Dr. Roubik Gregorian, executive VP and general manager Communications Division, CTO. “Utilization of this device will enable customers to use two, instead of four chips for T1/E1 environments. Plus they can leverage Exar’s R3 Technology’s two key benefits: single bill-of-material (reconfigurable termination) and relayless redundancy, that can simplify board layout, inventory requirements and reduce cost.”

Product Details
The devices meet or exceed popular telecom specifications such as ITU G.703, G.775, ANSI T1.402. and Bellcore GR-499 core. Other features include a parallel microprocessor bus supporting both synchronous and asynchronous microprocessor interfaces for Motorola, Intel and MIPS processors. The devices contain two crystal-less jitter attenuators per channel that can be simultaneously configured in both the transmit and receive paths. Also, because of their inherent flexibility and standards compliance, the LIUs can be used in conjunction with any of Exar’s T1/E1/J1 framers, or with a customer’s specific device.

“With two jitter attenuators per channel and Exar’s R3 Technology, the XRT83L314 and XRT83SL314 offer a powerful value proposition for our customers,” said Hugh Wright, director of marketing. “Competitors require several discrete devices to do what only one of our parts can accomplish.”

Prices, Packages and Availability
Samples of the XRT83L314 (LH/SH) and XRT83SL314 (SH) are available now. Both devices are offered in a 304-pin TBGA package, and at 1k volumes the XRT83L314IB is $83.55, and the XRT83SL314IB is $65.77.

About Exar
Exar Corporation (NASDAQ: EXAR) designs, develops and markets high-performance, analog and mixed-signal silicon solutions for the worldwide communications infrastructure. Leveraging its industry-proven analog design expertise, system-level knowledge and standard CMOS process technologies, Exar provides OEMs innovative, highly integrated ICs that facilitate the transport and aggregation of signals in access, metro and wide area networks. The Company’s physical layer silicon solutions address transmission standards such as T/E carrier, ATM and SONET. Additionally, Exar offers ICs for both the serial communications and the video and imaging markets. The Company is based in Fremont, CA, had fiscal 2002 revenues of $55 million, and employs approximately 265 people worldwide. For more information about Exar, visit www.exar.com (1) R3 Technology is a trademark of Exar Corporation.

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