SI5338N-B04252-GM

Overview

The SI5338N-B04252-GM is a programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. It operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Configuration is performed via an I2C/SMBus interface.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with 0 ppm accuracy.
• Supports flexible input references: external crystals (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), and differential inputs (5-710 MHz).
• Independent output voltage per driver selectable at 1.5, 1.8, 2.5, or 3.3 V.
• Features glitchless frequency adjustments in 1 ppm steps and independent phase adjustment with <20 ps resolution.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant systems.
• Ethernet switch/router and 1 GbE/10 GbE interfaces.
• Processor and FPGA clocking solutions.
• Broadcast video/audio timing applications.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout compatibility and factory programming settings. Ensure the I2C pull-up voltage aligns with the register configuration requirements if operating below 2.5 V. Confirm package availability and moisture sensitivity level handling procedures prior to assembly.

Selection Notes

Select this component when zero ppm frequency accuracy across multiple independent clocks is required. Ensure the target output format (LVPECL, LVDS, HCSL, etc.) falls within the specified frequency ranges for each driver. Verify that the input reference source matches the supported frequency bands and signal types defined in the electrical specifications.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators by providing frequency translation and buffering capabilities in a compact 4x4 mm QFN-24 package. The device integrates NVM for storing configuration data, allowing for field programming via software tools like ClockBuilder Pro.

Replacement Considerations

Direct replacements within the Si5338 family require verification of the factory-programmed frequency table and output configurations. Different suffixes may indicate variations in pre-programmed frequencies or packaging options rather than functional differences. Consult the official datasheet ordering information for compatible variants.