Description

The Si5323 is a jitter-attenuating precision clock multiplier for high-speed communication systems,

including SONET OC-48/OC-192, Ethernet, and Fibre Channel. The Si5323 accepts dual clock inputs ranging from 8 kHz to 707 MHz and generates two equal frequency-multiplied clock outputs ranging from 8 kHz to 1050 MHz. The input clock frequency and clock multiplication ratio are selectable from a table of popular SONET, Ethernet, and Fibre Channel rates.

Features

„ Selectable output frequencies ranging from 8 kHz to 1050 MHz

„ Ultra-low jitter clock outputswith jitter generation as low as 0.3 ps rms (50 kHz–80 MHz)

„ Integrated loop filter with selectable loop bandwidth (60Hz to 8.4kHz)

„ Meets OC-192 GR-253-COREjitter specifications

„ Dual clock inputs w/manual or automatically controlled hitless switching

„ Dual clock outputs with selectable signal format (LVPECL, LVDS, CML, CMOS)

„ Support for ITU G.709 FEC ratios (255/238, 255/237, 255/236)

„ LOL, LOS alarm outputs

„ Pin-controlled output phase adjust

„ Pin-programmable settings

„ On-chip voltage regulator for 1.8, 2.5, or 3.3 V ±10 operation

„ Small size: 6 x 6 mm 36-lead QFN

„ Pb-free, ROHS compliant

Applications

„ SONET/SDH OC-48/OC-192 line cards

„ GbE/10GbE, 1/2/4/8/10GFC line cards

„ ITU G.709 line cards

„ Optical modules

„ Test and measurement