SI5345D-B04833-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345D-B04833-GM 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 combination of output frequencies from any input frequency. 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 signals and 100 Hz to 250 MHz for LVCMOS. It features ultra-low jitter performance of 90 fs rms and meets ITU-T G.8262 SyncE requirements. The component operates within a temperature range of -40°C to +85°C and is housed in a 64-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional and integer synthesis modes.
• Features digitally programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz for optimized performance.
• Supports hitless input clock switching between fractionally related clocks and glitchless on-the-fly frequency changes.
• Includes in-circuit programmable non-volatile memory (NVM) to ensure known frequency configuration upon power-up.

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 confirm package type and tape/reel options. Confirm that the factory preprogrammed configuration matches the required frequency plan, as custom part numbers are assigned based on unique numerical sequences representing the preprogrammed settings.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when an output frequency limit of 350 MHz is sufficient, distinguishing it from the higher-frequency Si5345A variant which supports up to 1028 MHz. Ensure the design accommodates the 64-QFN 9x9 mm package dimensions and provides appropriate termination for the selected differential or single-ended input/output signal formats.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D family of jitter attenuating clock multipliers. The Si5345 variant specifically offers four inputs and ten outputs, whereas the Si5344 provides four outputs and the Si5342 provides two outputs. All variants share the same core DSPLL and MultiSynth technology architecture.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5345B-D-GM: Supports up to 350 MHz output but may lack specific factory programming.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency for the Si5345D variant?

The Si5345D variant supports a maximum differential output frequency of 350 MHz and an LVCMOS output frequency of 250 MHz.

How does the device handle input clock loss?

The device monitors inputs for Loss of Signal (LOS) and Out-of-Frequency (OOF). If the selected input fails and no other valid inputs are available, it enters Holdover Mode using stored historical frequency data.

Can the device switch between inputs without glitches?

Yes, it supports hitless switching for fractionally related inputs and glitchless switching for inputs with frequency differences up to ±500 ppm.