SI5344B-B03265-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344B-B03265-GMR is a low-jitter, four-output jitter attenuator and clock multiplier from the Si5344 Rev D family. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any combination of output frequencies from any input frequency. The device supports differential inputs 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 features an ultra-low jitter performance of 90 fs rms and meets ITU-T G.8262 SyncE requirements. The component operates on a 1.8 V core voltage and 3.3 V I/O supply within a -40°C to +85°C temperature range.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using fractional and integer synthesis
• Features fully integrated loop filter with digitally programmable bandwidth for optimized jitter attenuation
• Supports hitless input switching between fractionally related clocks and glitchless frequency changes
• Includes in-circuit programmable non-volatile memory for known power-up configuration

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 datasheet revision to confirm package type and tape-and-reel specifications. Ensure the part number matches the exact Rev D silicon variant required for your design. Cross-reference the unique numerical sequence in the part number with factory preprogrammed configuration data if applicable.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a four-output clock solution with sub-picosecond jitter is required. Verify that the maximum output frequency requirement does not exceed 350 MHz for differential outputs. Confirm compatibility with the available serial interface protocols and ensure the application benefits from the integrated NVM for simplified boot configurations.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5344 Rev D series, which offers four inputs and four outputs in a 44-QFN package. It shares architectural similarities with the ten-output Si5345 and two-output Si5342 variants. All devices in this family utilize the same MultiSynth and DSPLL technology stack for high-performance clock generation.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5344A-D-GMR

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum differential output frequency supported by this device?

The maximum differential output frequency is 350 MHz.

Does the device support locking to gapped input clocks?

Yes, the DSPLL supports locking to gapped input clocks with a minimum frequency of 10 MHz and up to two missing cycles out of every eight.

How is the loop filter implemented in this component?

The loop filter is fully integrated on-chip, eliminating the need for discrete external components and reducing noise coupling risks.