The Renesas Wide Area Network (WAN) PLLs are designed for synchronization of PDH, SONET/SDH and TDM equipment and interfaces. These devices comply with ITU-T recommendations for SDH Equipment Clocks (SECs); as well as Telcordia and ATIS/ANSI requirements for stratum 4, stratum 4E, stratum 3, and SONET minimum clock. Renesas WAN PLLs provide functions such as selectable loop filters, holdover, hitless reference switching, phase slope limiting, and clock redundancy.

Download the Timing Fabric for Communications Equipment Overview (PDF)