SI5344C-A-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344C-A-GM is a jitter attenuator and clock multiplier from the Si5344 family, featuring four inputs and four outputs in a 44-QFN package. It supports integer-only frequency synthesis with an output range of 0.001 MHz to 1028 MHz. The device utilizes DSPLL and MultiSynth technologies to achieve ultra-low jitter performance of 90 fs rms. It operates on a core voltage of 1.8 V ±5% and I/O voltages of 3.3 V, 2.5 V, or 1.8 V. The component functions within a 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-only synthesis modes
• Features fully integrated loop filters and digitally programmable jitter attenuation bandwidth for optimized performance
• Supports free-run, synchronous, and holdover modes with automatic and manual input clock switching capabilities

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 documentation to confirm availability status and revision level. Factory preprogrammed devices are available upon request. Confirm that the integer-only synthesis mode aligns with the system requirements before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when integer-only frequency synthesis is sufficient for the application design. Ensure the required output frequencies fall within the 0.001 MHz to 1028 MHz range. Verify that the 44-QFN package dimensions fit the PCB layout constraints and that the operating temperature range meets environmental specifications.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345/44/42 Rev D series of jitter attenuating clock multipliers. The Si5344 variant specifically provides four inputs and four outputs, distinguishing it from the ten-output Si5345 and two-output Si5342 models within the same technology family.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements include other variants within the Si5344 family such as the Si5344A-D-GM, Si5344B-D-GM, or Si5344D-D-GM. These alternatives differ primarily in their supported frequency synthesis modes and maximum output frequency ranges.