Monday, October 19, 2009

Exar Introduces SONET/SDH 40G Framer

Exar Corporation introduced high-density SONET/SDH framers that deliver 40G of bandwidth in a single device. The new Tethys II devices can be coupled with Optical Transport Network (OTN) devices to enable next-generation line cards for optical networking. The Tethys II devices are single-chip solutions that integrate functions previously requiring several components, including aggregation of up to 16 channels of traffic, serializing/deserializing, pointer processing, clock and data recovery, as well as transport overhead (TOH) and path overhead (POH) processing. The PEB2756 supports four OC-192/STM-64 channels. The PEB2757 supports four OC-192/STM-64, sixteen OC-48/STM-1, sixteen OC-12/STM-4, or sixteen OC-3/STM-1 channels, which can be mixed in any combination. Both devices support aggregate throughput up to 40 Gbps while meeting the most stringent SONET/SDH jitter requirements.