SI5344A-B05689-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344A-B05689-GM is a low-jitter, four-output jitter attenuator and clock multiplier from the Si5344 family. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency up to 1028 MHz with ultra-low jitter of 90 fs rms. The device features four inputs (differential: 8 kHz–750 MHz; LVCMOS: 8 kHz–250 MHz) and supports integer and fractional synthesis modes. Outputs are configurable for LVDS, LVPECL, LVCMOS, CML, and HCSL formats. It operates on a core voltage of 1.8 V ±5% and output supplies of 3.3 V, 2.5 V, or 1.8 V. The component is housed in a 44-QFN 7x7 mm package and functions within a temperature range of –40 to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis.
• Supports hitless input clock switching between fractionally related inputs and glitchless on-the-fly output frequency changes.
• Includes in-circuit programmable non-volatile memory to ensure known frequency configuration upon power-up.
• Features fully integrated loop filter and digitally programmable jitter attenuation bandwidth for optimized performance.

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 B05689 against official Skyworks documentation to confirm factory preprogrammed configuration details. Ensure compatibility with ClockBuilder Pro software settings for the intended application. Confirm RoHS compliance and Pb-free status as per the Rev D datasheet specifications before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model for applications requiring four differential or single-ended outputs with high-frequency flexibility up to 1028 MHz. The Si5344A variant specifically supports both integer and fractional synthesis modes, unlike the C or D variants which may be integer-only or lower frequency. Ensure the design accommodates the 44-QFN 7x7 mm package dimensions and thermal requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D family of jitter attenuators. The Si5344 variant specifically provides four inputs and four outputs, distinguishing it from the ten-output Si5345 and two-output Si5342. All family members share the same underlying DSPLL and MultiSynth technology architecture.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct functional replacements within the same family include SI5344A-D-GM (generic version) or SI5344B-D-GM if lower frequency requirements allow. For higher channel counts, SI5345A-D-GM is an option. Verify that any substitute matches the 44-QFN package and electrical specifications.