SI5345B-D06777-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-D06777-GMR is a 10-output jitter attenuator and clock multiplier from the Si5345 family, manufactured by Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency combination below 350 MHz from inputs up to 750 MHz. The device features an integrated loop filter, in-circuit programmable non-volatile memory (NVM), and supports I2C/SPI interfaces. It operates on a core voltage of 1.8 V ±5% and output supplies of 3.3 V, 2.5 V, or 1.8 V. The component is housed in a 64-QFN package with dimensions of 9×9 mm and functions within a temperature range of –40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional and integer synthesis modes.
• Provides ultra-low jitter performance of 90 fs rms with digitally programmable jitter attenuation bandwidth.
• Supports hitless input clock switching, free-run, synchronous, and holdover modes of operation.
• Features highly configurable outputs compatible with LVDS, LVPECL, LVCMOS, CML, and HCSL signal formats.

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN muxponders and transponders
• 10/40/100 G networking line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• SONET/SDH line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'GMR' corresponds to tape and reel packaging as indicated in the datasheet notes. Confirm that the factory preprogrammed configuration associated with the numerical sequence matches the required frequency plan. Ensure compatibility with the ClockBuilder Pro software for final validation of the NVM settings before deployment.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when output frequencies are constrained to a maximum of 350 MHz. The Si5345 variant provides ten independent outputs, suitable for complex multi-clock systems requiring synchronization. Verify that the application requires the specific jitter attenuation characteristics and holdover capabilities defined by the DSPLL architecture compared to standard clock generators.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D family of jitter attenuators. The Si5345 specifically offers four inputs and ten outputs in a 64-QFN package. Other family members include the Si5344 (4 outputs) and Si5342 (2 outputs), which share similar functional architectures but differ in channel count and package size.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements within the same family include the Si5345A-Dxxxxx-GMR or Si5345C-Dxxxxx-GMR if higher output frequency ranges exceeding 350 MHz are required. Ensure the substitute part number includes the correct factory preprogramming sequence to maintain identical operational parameters without reconfiguration.