SI5338N-B05879-GMR

Overview

The SI5338N-B05879-GMR is a programmable quad clock generator from Skyworks Solutions. It synthesizes four independent output clocks with zero ppm frequency accuracy using MultiSynth technology. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V, with individual output drivers configurable for 1.5 V, 1.8 V, 2.5 V, or 3.3 V. Key electrical parameters include a maximum input frequency of 710 MHz, a typical phase jitter of 0.7 ps RMS, and an operating temperature range of -40 to +85 °C.

Feature Summary

• MultiSynth technology enables any-frequency synthesis with 0 ppm precision on four independent outputs.
• Flexible output drivers support LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL signal formats.
• Independent output voltage selection per driver: 1.5 V, 1.8 V, 2.5 V, or 3.3 V.
• Glitchless frequency adjustments via independent increment/decrement features in 1 ppm steps.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant systems
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout configuration and factory programming settings. Ensure the I2C pull-up voltage matches the system requirements, as register adjustments may be necessary for voltages below 2.5 V. Confirm package type and thermal characteristics align with the PCB land pattern specifications.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source. Verify that the desired output signal formats (LVDS, LVPECL, etc.) and voltage levels are supported by the specific output pins available in the chosen variant. Check input reference frequency compatibility, ensuring it falls within the specified ranges for crystal, CMOS, or differential inputs.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'N' suffix typically denotes a specific factory-programmed configuration or pinout variant within the series. The device replaces multiple discrete oscillators, reducing board space and power consumption while providing high-precision timing solutions.

Replacement Considerations

Direct replacements must match the 24-QFN package and I2C interface. Verify that alternative parts support the same output formats and voltage levels. Consult the manufacturer's cross-reference tools for confirmed compatible substitutes with identical functional capabilities.