Exar Intros LIUs, AFE

FREMONT, Calif. -- Exar Corporation (Nasdaq: EXAR), a leading provider of high-performance, mixed-signal silicon solutions for the worldwide communications infrastructure announced its innovative R(3) (Reconfigurable, Relayless Redundancy) technology, and the expansion of its T1/E1/J1 offerings with the introduction of three new low power, highly integrated short haul LIUs. The new single, four and eight-channel devices (XRT83SL30/34/38) are targeted at Multi-Service Provisioning Platforms (MSPPs), access devices, media gateways, routers, and frame relay access devices. Distancing it from competitive offerings, Exar's R(3) Technology (Reconfigurable, Relayless Redundancy) delivers key innovative features to customers designing T1/E1/J1 interface cards. The devices are Reconfigurable with integrated termination 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. Conventional approaches require fixed settings -- T1, or E1, or J1, forcing customers to determine device settings before manufacturing, and carry all configurations in inventory even if they are not immediately required. 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. "Leveraging these two key benefits: single bill-of-material (reconfigurable termination) and relayless redundancy can simplify board layout, inventory requirements and reduce costs," said Dr. Roubik Gregorian, executive VP and general manager Communications Division, CTO. "These features are unique to the marketplace, and significantly differentiate Exar's offering." In a separate release: EXAR Corporation (Nasdaq: EXAR), a leading provider of high-performance, mixed-signal silicon solutions for the worldwide communications infrastructure added a seven-channel (T1) AFE to its extensive T/E product line. The XRT81L17 is targeted at multi-channel devices including digital cross connects, channel banks, multiplexers, high-speed data transmission line cards, as well as public switching systems and PBX interfaces. "This new device complements an already extensive T1/E1 product family including short-haul/long-haul LIUs, framers, clock synchronization adapters and co-directional products," said Dr. Roubik Gregorian, executive vice president and general manager, Communications division, and CTO, of Exar Corporation. "The higher integration levels offered by this new device greatly reduce component requirements for T1 transmission applications." The XRT81L17 includes seven independent T1 analog front ends, (receiver/transmitter pairs with clock and data recovery) which enables the physical layer of a 28-line system to be implemented with only four devices. The chip contains transmit duty cycle correction circuitry so that the AFE can generate output transmit pulses independent of the transmit clock's duty cycle. The XRT81L17 is compliant with leading industry DS1 standards. It also detects and clears LOS per ITU-T G.775. In addition, the device can be controlled/configured in both hardware and host modes. This product is pin compatible with Exar's XRT81L27, a seven-channel E1 (CEPT) AFE. This pair of seven-channel LIUs offers cost effective solutions for both T1 and E1 environments. Exar Corp.