SI5345B-B04311-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-B04311-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. The device features four inputs, accepting differential signals up to 750 MHz or LVCMOS up to 250 MHz. It operates on a 1.8 V core voltage and 3.3 V analog supply within a -40°C to +85°C temperature range. The component is housed in a 64-QFN (9x9 mm) package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fourth-generation DSPLL technology
• Provides ultra-low jitter performance of 90 fs rms
• Supports hitless input clock switching between fractionally related clocks
• 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 B04311 suffix configuration against the manufacturer's ordering guide. This suffix indicates a factory preprogrammed part number assigned by Skyworks. Confirm that the required frequency plan matches the stored NVM data, as custom parts cannot be reconfigured via ClockBuilder Pro without disabling specific security settings.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when an output frequency limit of 350 MHz is sufficient. For applications requiring outputs above 350 MHz, consider the Si5345A variant which supports up to 1028 MHz. Ensure the design accommodates the 64-QFN package dimensions and utilizes the recommended external crystal on XA/XB pins for optimal jitter performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family, which integrates MultiSynth and DSPLL technologies. The 'B' designation specifically limits the maximum output frequency to 350 MHz, distinguishing it from the 'A' and 'C' variants. The 'GM' suffix denotes the standard tape and reel packaging option for surface mount assembly.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5345B-D-GM