SI5345B-B05979-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-B05979-GM is a low-jitter, 10-output clock synthesizer and jitter attenuator from Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency combination from any input source. The device supports differential inputs up to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 350 MHz for differential formats and up to 250 MHz for LVCMOS. It features an integrated loop filter, in-circuit programmable non-volatile memory, and operates 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.
• Features ultra-low jitter performance with a typical value of 90 fs rms.
• Supports hitless input clock switching between fractionally related sources.
• Includes in-circuit programmable non-volatile memory for persistent configuration storage.

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 against the manufacturer's current documentation to ensure compatibility with required packaging options and factory preprogramming configurations. Confirm availability status through authorized distributors as supply conditions may vary. Ensure that the selected variant meets the necessary regulatory compliance standards for the intended deployment environment.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when applications require high channel counts with flexible frequency generation capabilities. The Si5345B variant is suitable for designs where output frequencies do not exceed 350 MHz. Consider the integrated loop filter and NVM features if board space optimization and power-on reliability are critical design constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345 family, which offers 4 inputs and 10 outputs in a 64-QFN package. It is distinct from the Si5344 (4 outputs) and Si5342 (2 outputs). The 'B' designation indicates a maximum output frequency limit of 350 MHz, differentiating it from the 'A' or 'C' variants which support higher frequencies up to 1028 MHz.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345B-D-GM