SI5345B-B06079-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-B06079-GM is a low-jitter, 10-output clock synthesizer and jitter attenuator from Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency combination from any input source. The device supports differential inputs up to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 350 MHz for differential formats and 100 Hz to 250 MHz for LVCMOS. It operates on a single 1.8 V core voltage (VDD) and a 3.3 V analog supply (VDDA), with independent output supplies configurable at 3.3 V, 2.5 V, or 1.8 V. The component is housed in a 64-QFN package and functions within a temperature range of -40 °C 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.
• Features ultra-low jitter performance of 90 fs rms.
• 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
• SONET/SDH line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm factory preprogramming details. Confirm availability status as custom part numbers may have restricted distribution channels. Ensure the serial interface configuration matches the system requirements before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when high channel count and flexible frequency generation are required. The B-series designation indicates a maximum output frequency limit of 350 MHz, suitable for standard networking applications. Verify that the external crystal frequency falls within the recommended 25 MHz to 54 MHz range for optimal jitter performance.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family, which integrates DSPLL and MultiSynth technologies. The Si5345 variant specifically provides four inputs and ten outputs in a 64-QFN package. It is designed for applications demanding precise clock synchronization and jitter attenuation across multiple network interfaces.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other Si5345B variants such as SI5345B-D-GM or SI5345B-A-GM, provided the output frequency ranges and pinout compatibility are verified. Custom preprogrammed parts like SI5345B-D10093-GM may serve as functional substitutes if their specific frequency plans match the design requirements.