SI5342B-B05229-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5342B-B05229-GMR is a jitter attenuating clock multiplier from the Si5342 Rev D family, manufactured by Skyworks Solutions. It features four inputs and two outputs housed in a 44-QFN 7x7 mm package. The device supports any-frequency generation with an output range of 0.001 to 350 MHz. It utilizes fourth-generation DSPLL and MultiSynth technologies for ultra-low jitter performance of 90 fs rms. Power supplies include VDD at 1.8 V ±5% and VDDA at 3.3 V ±5%. Operating temperature ranges from -40 to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional synthesis.
• Integrates a fully on-chip loop filter to eliminate discrete noise coupling risks.
• Supports hitless input clock switching between fractionally related sources.
• 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

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific B05229 suffix configuration against the official datasheet ordering guide to ensure the preprogrammed settings match design requirements. Confirm package availability and RoHS compliance status through authorized distributors before finalizing procurement plans.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when only two differential or single-ended outputs are required within the 350 MHz limit. Ensure the application benefits from the integrated NVM and low jitter specifications compared to higher-output variants like the Si5344 or Si5345.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D series, which combines DSPLL and MultiSynth technologies. The Si5342 variant specifically provides a compact solution with four inputs and two outputs, distinguishing it from the four-output Si5344 and ten-output Si5345 models.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5342B-D-GM is listed as a similar replacement option in distributor records. Verify pin compatibility and functional equivalence before substitution.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency for the Si5342B variant?

The Si5342B variant supports an output frequency range up to 350 MHz.

How does the device handle input clock loss?

The device automatically enters holdover mode if the selected input clock becomes invalid and no other valid inputs are available, utilizing 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 differing by up to ±500 ppm.