SI5344H-C-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Si5344H-C-GMR is a high-frequency, ultra-low jitter attenuating clock multiplier featuring fourth-generation DSPLL and MultiSynth technologies. It provides two inputs and four outputs in a QFN-44 package. High-Frequency Mode supports up to 2.75 GHz with typical phase jitter of 50 fs-rms (1 MHz–40 MHz). MultiSynth Mode enables any frequency up to 717.5 MHz with typical jitter under 150 fs-rms (12 kHz–20 MHz). The device accepts input frequencies from 8 kHz to 750 MHz and operates on a 1.8 V core supply with independent output supplies. It includes DCO control, glitchless frequency changes, and in-circuit programmable non-volatile memory.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Combines fourth-generation DSPLL with MultiSynth technology for flexible frequency synthesis
• Supports High-Frequency Mode up to 2.75 GHz and MultiSynth Mode up to 717.5 MHz
• Features Digitally Controlled Oscillator (DCO) mode with fine step control
• Includes in-circuit programmable non-volatile memory for known power-up configuration

Clock Generators, PLLs, Frequency Synthesizers Applications

• 100G/200G/400G Optical Transceivers
• Wireless base-stations

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm availability and exact electrical characteristics. Confirm that the component matches the required pinout and voltage specifications for the target application before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when ultra-low jitter performance is critical for coherent optical transceiver designs. Ensure the design accommodates the QFN-44 package dimensions and thermal requirements. Utilize ClockBuilder Pro software to optimize loop bandwidth and verify jitter tolerance compliance for the specific frequency plan.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5344H family, which also includes the Si5342H variant offering two outputs. Both devices share similar core architectures but differ in output count. The Si5344H is specifically designed for applications requiring multiple synchronized clock domains with stringent jitter constraints.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The Si5342H is a related part within the same family but offers only two outputs instead of four. Verify if the reduced output count meets system requirements before considering it as a substitute.