SI5345B-B05780-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-B05780-GMR is a jitter attenuator and clock multiplier from the Si5345 family, manufactured by Skyworks Solutions Inc. It features four inputs and ten outputs housed in a 64-QFN package measuring 9x9 mm. The device supports differential input frequencies from 8 kHz 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 operates on core voltages of VDD at 1.8 V ±5% and VDDA at 3.3 V ±5%, with independent output supplies configurable for 3.3 V, 2.5 V, or 1.8 V. The operating temperature range spans from -40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fourth-generation DSPLL and MultiSynth technologies.
• Provides ultra-low jitter performance of 90 fs rms with digitally programmable jitter attenuation bandwidth ranging from 0.1 Hz to 4 kHz.
• Supports hitless input clock switching, free-run modes, and holdover capabilities with glitchless on-the-fly output frequency changes.

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 B05780 suffix against the official Skyworks ordering guide. Confirm that the GMR suffix indicates tape and reel packaging requirements for your assembly process. Ensure compatibility with the ClockBuilder Pro software version used for generating the NVM data.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when applications require ten low-jitter outputs with a maximum frequency of 350 MHz. Verify that the required input frequencies fall within the specified differential or LVCMOS ranges. Ensure the system design accommodates the 64-QFN 9x9 mm footprint and provides the necessary power supply rails for VDD and VDDA operation.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family, which integrates fourth-generation DSPLL technology. The 'B' designation specifies the 350 MHz maximum output frequency capability, distinguishing it from the 'A' variant which supports up to 1028 MHz. The part utilizes non-volatile memory to retain configuration settings across power cycles.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The SI5345B-D-GM serves as a standard alternative within the same series. Verify if the generic part number requires custom programming to match the specific frequency plan of the B05780 variant.