SI5344D-B05357-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344D-B05357-GMR is a factory preprogrammed, low-jitter clock multiplier and jitter attenuator from the Si5344 Rev D family. It features four inputs and four outputs housed in a 44-QFN package. The device generates any output frequency up to 350 MHz using fourth-generation DSPLL technology. Key electrical parameters include an ultra-low jitter of 90 fs rms, a core voltage (VDD) of 1.8 V ±5%, and an analog supply (VDDA) of 3.3 V ±5%. It supports input frequencies from 8 kHz to 750 MHz (differential) or 250 MHz (LVCMOS). The unit operates within a temperature range of –40 °C to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL and MultiSynth technologies for any-frequency generation and jitter attenuation
• Includes in-circuit programmable non-volatile memory to ensure known power-up configuration
• Supports free-run, synchronous, and holdover modes with automatic or manual input switching
• Features fully integrated on-chip loop filter to eliminate discrete noise coupling risks

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 B05357 suffix against project requirements before procurement. Confirm that the tape and reel packaging format aligns with automated assembly capabilities. Ensure compatibility with the required serial interface protocols and check for any obsolescence notices regarding this specific ordering part number.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when a fixed, preconfigured 4-output jitter attenuator is needed without custom programming. The 'D' variant restricts maximum output frequency to 350 MHz; choose 'A' or 'C' variants if frequencies above 350 MHz are required. Verify that the 44-QFN package dimensions fit the PCB land pattern and that the 1.8 V / 3.3 V dual-supply architecture matches the system power design.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5344 Rev D series, which offers 4 inputs and 4 outputs in a 7x7 mm 44-QFN package. It shares architectural similarities with the Si5345 (10 outputs) and Si5342 (2 outputs) but is optimized for applications requiring fewer channels. The 'GMR' suffix indicates tape and reel packaging, while the numerical suffix denotes a unique factory preprogrammed configuration.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5344B-D-GMR: Compatible alternative with identical 4-input/4-output topology and 350 MHz max frequency limit.