SI5344A-D06455-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344A-D06455-GMR is a factory preprogrammed clock synthesizer and jitter cleaner from the Si5344 family. It features four inputs and four outputs, supporting integer and fractional frequency synthesis with output frequencies up to 1028 MHz. The device utilizes fourth-generation DSPLL technology for ultra-low jitter performance of 90 fs rms. It operates on a 1.8 V core voltage and 3.3 V analog supply, housed in a 44-QFN package. The part includes non-volatile memory for configuration retention and supports I2C/SPI interfaces.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis modes.
• Provides ultra-low jitter performance of 90 fs rms via fourth-generation DSPLL technology.
• Supports hitless input clock switching and automatic or manual selection between multiple inputs.
• Features programmable jitter attenuation bandwidth and holdover mode for stable operation during input loss.

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 suffix D06455 against your design requirements. Confirm that the GMR tape-and-reel packaging matches your assembly line capabilities. Ensure the device meets RoHS-6 compliance standards for your region. Check for any recent Product Change Notices affecting this specific revision.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when a fixed, preconfigured clock solution is required without field programming. The Si5344A variant supports full frequency ranges up to 1028 MHz, unlike lower-tier variants restricted to 350 MHz. Consider the 44-QFN package size constraints and thermal dissipation requirements for your PCB layout.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5344 family of jitter attenuators, which offers four outputs in a compact 7x7 mm QFN package. It shares architectural similarities with the Si5345 (10 outputs) and Si5342 (2 outputs). The 'A' designation indicates support for both integer and fractional synthesis modes across the full frequency range.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

SI5344A-D-GM is the base blank prototype version requiring user programming. SI5344A-D0xxxxx-GM represents other factory preprogrammed configurations with different frequency plans. Verify that the specific numerical sequence in the replacement part matches the exact clock tree requirements of the original design.