EXAR has highly integrated multi-channel SONET/SDH framer products with on chip high speed multi-channel SERDES functions, a range SONET/SDH CDR and Transceiver products. The higher levels of integration and superior jitter performance has benefited many successful SONET/SDH product deployments.
Exar's SONET Transceivers and CDRs have been used in SONET/SDH and backplane applications that require 155Mbps or 622Mpbs rate, because of their excellent Jitter Genration/ Tolerance/ Transfer performances and ease of use. Quad channel CDRs are also available.
Another family of Framer / Mapper products provide flexible mapping of multi-channel T1/E1 or DS3/E3 clients into SONET/SDH networks. The highest density product in this family provides mapping of 28 independent T1s (or 21 E1s) into an STS-1. It also supports the transparent transfer and regeneration of the independent T1/E1 clocks across the SONET/SDH network and meets all the jitter / wanders specs of the T1/E1 client interfaces.
The Tethys family of products offers the highest density mixed signal devices and contain 16xOC-48/STM16 or 4xOC192/STM64 framers with 768 Pointer Processors plus 32x2.5G high performance analog SERDES with CDR functions that drive SFPs and meet all SONET/SDH jitter performance requirements.