SI5344B-B05770-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344B-B05770-GMR is a jitter attenuator and clock multiplier from the Si5344 Rev D family, manufactured by Skyworks Solutions. It features four inputs and four outputs housed in a 44-QFN (7x7 mm) package. The device supports any-frequency synthesis with output frequencies ranging from 100 Hz to 350 MHz. It utilizes fourth-generation DSPLL and MultiSynth technologies to achieve ultra-low jitter performance of 90 fs rms. The component operates within a temperature range of -40°C to +85°C and accepts differential input frequencies up to 750 MHz.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional and integer synthesis modes.
• Supports hitless input clock switching between fractionally related clocks without propagating phase offsets.
• Includes programmable jitter attenuation bandwidth for optimizing jitter performance at the application level.
• Features fully integrated on-chip loop filters to eliminate noise coupling risks associated with discrete solutions.

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 tape and reel packaging requirements. Ensure the factory preprogrammed configuration matches the target design specifications before procurement. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when four output channels are required with frequencies capped at 350 MHz. Use ClockBuilder Pro software to configure the serial interface settings and non-volatile memory programming. Verify that the external crystal frequency falls within the recommended 25 to 54 MHz range for optimal jitter performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D series of jitter attenuating clock multipliers. The Si5344 variant specifically provides four inputs and four outputs in a compact 44-QFN package. It shares core architecture with the Si5345 and Si5342 but differs in channel count and maximum output frequency capabilities defined by its specific ordering suffix.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5344A-D-GMR offers higher output frequency support up to 1028 MHz. Si5344C-D-GMR restricts synthesis to integer-only modes. Si5344D-D-GMR provides an alternative within the same frequency range but may differ in specific factory configurations.