SI5334K-B04339-GMR

Overview

The SI5334K-B04339-GMR is a pin-controlled quad clock generator from Skyworks Solutions. It synthesizes any frequency on four differential outputs using MultiSynth technology, achieving zero ppm frequency error and 0.7 ps RMS typical jitter. The device supports input frequencies up to 710 MHz and output frequencies up to 350 MHz generally, with select frequencies reaching 710 MHz. It features independently configurable output drivers supporting LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats with individual supply voltages of 1.5, 1.8, 2.5, or 3.3 V. The core operates at 1.8, 2.5, or 3.3 V in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential outputs with 0.7 ps RMS typical jitter.
• Supports Spread Spectrum Clocking (SSC) compliant with PCI Express standards for EMI reduction.
• Flexible input options include external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential clocks (up to 710 MHz).
• Pin-controlled configuration with factory-programmable NVM; no I2C interface required.

Applications

• Ethernet switch and router clocking
• PCI Express 2.0/3.0 timing
• Processor and FPGA clock generation
• Broadcast video and audio synchronization

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm the exact frequency plan and pin control settings. As this is a custom programmable device, standard off-the-shelf availability may vary. Confirm RoHS compliance and lead times directly with authorized distributors or Skyworks Solutions prior to procurement.

Selection Notes

Select this model when pin control is preferred over I2C programming. Ensure the required output voltage levels match the available VDDOx options (1.5V, 1.8V, 2.5V, 3.3V). Verify that the target output frequencies fall within the supported ranges: up to 350 MHz for general use, or up to 710 MHz for specific integer-related frequencies. Check if Spread Spectrum functionality is required for EMI compliance.

Part Context

This component belongs to the Si5334 family of pin-controlled clock generators. The 'K' suffix indicates support for Spread Spectrum Clocking (SSC). Other variants in the series include pin-controlled phase adjustment (D/E/F/G/H/J) or different control interfaces. The Si5334 is designed as a low-power alternative to I2C-controlled devices like the Si5338.

Replacement Considerations

Direct replacements must be selected from the Si5334 family with matching output configurations. For non-SSC applications, the Si5334C variant may be suitable. If I2C control is acceptable, the Si5338 series offers similar performance but requires different firmware or configuration tools. Verify pinout compatibility between 24-QFN packages.