SI5345A-B05374-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345A-B05374-GMR is a factory preprogrammed clock synthesizer and jitter attenuator from the Si5345 Rev D family. It features four inputs and ten outputs, supporting any-frequency generation up to 1028 MHz using integer and fractional synthesis modes. The device integrates fourth-generation DSPLL and MultiSynth technologies for ultra-low jitter performance of 90 fs rms. It operates on a single 1.8 V core voltage with independent output supplies of 3.3 V, 2.5 V, or 1.8 V. The component is housed in a 64-QFN package (9x9 mm) and supports an operating 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.
• Integrates fourth-generation DSPLL and MultiSynth technologies for high-performance jitter attenuation.
• 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 factory preprogrammed configuration associated with the numerical suffix B05374 against the target design requirements. Confirm that the tape and reel packaging option aligns with automated assembly processes. Ensure compatibility with the ClockBuilder Pro software version used for initial device characterization.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part when a fixed, preconfigured frequency plan is required without field programming. The 'A' designation indicates support for output frequencies up to 1028 MHz. Verify that the 10-output count meets system needs, as other variants offer fewer outputs. Ensure the serial interface configuration matches the host controller capabilities.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D series, which combines DSPLL and MultiSynth technologies. The 'B05374' suffix denotes a specific factory-programmed frequency configuration rather than a functional variant. The device is designed for applications requiring precise clock distribution and jitter cleaning across multiple domains.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other factory preprogrammed Si5345A-D-xxxxx-GMR parts with different frequency plans. For generic prototyping, the base Si5345A-D-GM may be used if field reconfiguration is acceptable. Ensure pinout and package dimensions remain compatible during substitution.