SI5345D-B05121-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5345D-B05121-GM is a 10-output jitter attenuator and clock multiplier from the Si5345 family. It supports any-frequency generation with output frequencies up to 350 MHz using integer and fractional synthesis modes. The device features four inputs, accepting differential signals up to 750 MHz or LVCMOS up to 250 MHz. It operates on a core voltage of 1.8 V ±5% and an I/O supply of 3.3 V ±5%. The component is housed in a 64-QFN package measuring 9x9 mm and functions within a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL and MultiSynth technologies for ultra-low jitter performance.
• Supports free-run, synchronous, and holdover modes with automatic or manual input switching.
• Features fully integrated loop filter and digitally programmable jitter attenuation bandwidth.
• Includes in-circuit programmable non-volatile memory for known power-up configurations.

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 factory preprogramming or configuration settings. Confirm availability status as distribution channels may list limited stock or end-of-life conditions for specific variants within the Si5345 series.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when applications require up to ten outputs with frequencies capped at 350 MHz. Ensure the design accommodates the 64-QFN 9x9 mm footprint and provides separate supplies for the 1.8 V core and 3.3 V I/O domains. Utilize ClockBuilder Pro software for configuring the serial interface and NVM settings.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5345 Rev D family, which includes variants like the Si5345A, B, C, and D distinguished by their maximum output frequency capabilities and synthesis modes. The Si5345D specifically targets applications requiring up to 350 MHz outputs with full integer and fractional flexibility.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5345B-D-GM is listed as a similar replacement option in distributor records for discontinued variants within the same package and family.