SI5344D-B03551-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344D-B03551-GMR is a low-jitter, four-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 RMS value of 90 fs.
• 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 factory preprogrammed configuration associated with the B03551 suffix against project requirements before procurement. Confirm package availability and lead times directly with authorized distributors or Skyworks sales representatives, as supply status varies by region and time.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when a fixed, factory-programmed configuration is preferred over field programming. Ensure the required output frequency range does not exceed 350 MHz for differential outputs. Verify that the application environment falls within the specified -40°C to +85°C operating temperature range.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5344 Rev D family, which offers four inputs and four outputs in a 44-QFN package. It shares core architecture with the Si5345 and Si5342 but provides a reduced I/O count suitable for applications requiring fewer clock domains while maintaining high-performance jitter attenuation capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements include other Si5344 variants such as SI5344A-D-GM or SI5344B-D-GM, provided the specific preprogrammed frequency plan matches the design requirements. Cross-referencing with Si5345 devices is possible if additional output channels are acceptable.