SI5344D-B04894-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5344D-B04894-GM is a low-jitter, four-output clock synthesizer and jitter attenuator from Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any frequency combination from any input source. The device supports differential inputs up to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 350 MHz in differential formats. It operates on a 1.8 V core voltage and 3.3 V analog supply, housed in a 44-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any output frequency combination from any input frequency using fractional synthesis
• Features ultra-low jitter performance of 90 fs rms with digitally programmable loop bandwidth
• Supports hitless input switching between fractionally related clocks and glitchless frequency changes
• Includes in-circuit programmable non-volatile memory for known power-up configurations

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 B04894 against the manufacturer's current documentation to confirm factory preprogramming details. Confirm package availability and lead times directly with authorized distributors or the manufacturer, as stock levels fluctuate. Ensure compliance with RoHS-6 standards and verify humidity sensitivity handling requirements during assembly.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when applications require four outputs with frequencies capped at 350 MHz. The 'D' suffix indicates support for integer and fractional synthesis within the specified frequency range. Verify that the required output signal formats (LVDS, LVPECL, LVCMOS, CML, HCSL) align with the device's configurable driver capabilities. Ensure the system design accommodates the 44-QFN 7x7 mm package footprint.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5344 Rev D family, which integrates fourth-generation DSPLL and MultiSynth technologies. The family includes variants like the Si5344A-D-GM for higher frequency ranges up to 1028 MHz. The Si5344D variant specifically targets applications requiring outputs up to 350 MHz with flexible jitter attenuation capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5344A-D-GM offers a higher maximum output frequency of 1028 MHz compared to the 350 MHz limit of the Si5344D series. Both share the same 44-QFN package and pinout, facilitating potential direct replacements if frequency requirements allow.