SI5338K-B10419-GMR

Overview

The SI5338K-B10419-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended outputs with frequencies up to 710 MHz. The device features low phase jitter of 0.7 ps RMS typical, zero ppm frequency accuracy, and flexible input references including external crystals (8–30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz. Powered by a single core supply of 1.8, 2.5, or 3.3 V, it operates within a temperature range of –40 to +85 °C in a 24-lead QFN package.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four output drivers with 0 ppm precision.
• Low phase jitter performance of 0.7 ps RMS typical for high-speed applications like PCIe Gen 3/4.
• Flexible input options support external crystals, CMOS, SSTL/HSTL, and differential signals up to 710 MHz.
• Independent output voltage configuration per driver supports 1.5, 1.8, 2.5, or 3.3 V logic levels.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant timing
• Ethernet switch/router and 1 GbE/10 GbE interfaces
• Processor and FPGA clocking systems
• Telecom line cards and MSAN/DSLAM/PON equipment

Procurement Notes

Verify the specific ordering suffix B10419 against the manufacturer's official documentation to confirm pre-programmed register settings or NVM content. Ensure I2C pull-up voltages are compatible with the selected core supply voltage, particularly if operating below 2.5 V. Confirm moisture sensitivity handling requirements during assembly.

Selection Notes

Select this component when multiple independent clock frequencies with low jitter are required from a single IC. Verify that the desired output formats (LVPECL, LVDS, HCSL, CMOS, etc.) match the available driver configurations. Ensure the input reference frequency falls within the supported ranges for the chosen input type.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'K' variant typically denotes specific pinout or feature configurations within the family, while the suffix indicates factory programming. It replaces discrete crystal oscillators and frequency translators in complex digital systems.

Replacement Considerations

Direct replacements must be verified via Skyworks Solutions cross-reference tools. Generic Si5338 variants may differ in pre-programmed frequencies or output enable controls. Ensure substitute parts maintain the same QFN-24 footprint and electrical specifications.