Data Sheet Dual Input Multiservice Line Card Adaptive Clock Translator AD9557 FEATURES Supports GR-1244 Stratum 3 stability in holdover mode Supports smooth reference switchover with virtually no disturbance on output phase Supports Telcordia GR-253 jitter generation, transfer, and tolerance for SONET/SDH up to OC-192 systems Supports ITU-T G.
8262 synchronous Ethernet slave clocks Supports ITU-T G.
823, G.
824, G.
825, and G.
8261 Auto/manual holdover and reference switchover 2 reference inputs (single-ended or differential) Input reference frequencies: 2 kHz to 1250 MHz Reference validation and frequency monitoring (1 ppm) Programmable input reference switchover priority 20-bit programmable i...

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