SI5338N-B05879-GM

Overview

The SI5338N-B05879-GM is a programmable quad clock generator from Skyworks Solutions. It synthesizes four independent output clocks with zero ppm precision using MultiSynth technology. The device supports differential inputs up to 710 MHz and outputs in LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V with typical current consumption of 45 mA. Integrated NVM allows for field programming via I2C/SMBus.

Feature Summary

• MultiSynth technology enables any-frequency synthesis with 0 ppm accuracy
• Four independently configurable output drivers supporting multiple signal formats
• Low phase jitter performance (0.7 ps RMS typ) compliant with PCIe Gen 1/2/3/4
• Flexible input reference options including external crystals and differential signals

Applications

• PCIe Gen 1/2/3/4 common clock generation
• Ethernet switch and router timing
• Processor and FPGA clocking systems
• Telecom line cards and broadcast video/audio timing

Procurement Notes

Verify the specific factory configuration code B05879 against the official datasheet ordering information table to ensure correct frequency and format settings. Confirm that the GMR suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly processes.

Selection Notes

Select this component when designing systems requiring low-jitter clock distribution with flexible output voltage levels. Ensure the application utilizes differential inputs if frequencies above 350 MHz are required. Validate that the target PCB land pattern matches the 24-lead QFN package dimensions specified in the mechanical drawings.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators by providing synthesized frequencies. The device integrates an internal oscillator circuit and PLL, reducing board space compared to multi-oscillator solutions while maintaining high precision timing.

Replacement Considerations

Direct pin-compatible replacements within the same series include other Si5338 variants with different factory configurations. Verify that alternative part numbers support the required output formats and frequency ranges before substitution.