ZL30407 - SONET/SDH Network Element PLL

The ZL30407 is a Network Element Phase-Locked Loop designed to synchronize SDH and SONET systems.

In addition, it generates multiple clocks for legacy PDH equipment and provides timing for STBUS and GCI backplanes.

VDD GND C20i FCS OE PRI PRIOR Primary Acquisition PLL Mas

• Meets requirements of GR-253 for SONET Stratum 3 and SONET Minimum Clocks (SMC) Meets requirements of GR-1244 for Stratum 3 Meets requirements of G.813 Option 1 and 2 for SDH Equipment Clocks (SEC) Generates clocks for ST-BUS, DS1, DS2, DS3, OC-3, E1, E3, STM-1 and 19.44 MHz Holdover accuracy of 4x10 -12 meets GR-1244 Stratum 3E and ITU-T G.812 requirements Continuously monitors both references for frequenc.