SI5338C-B05394-GMR

Overview

The SI5338C-B05394-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. It operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V and supports flexible input references including external crystals (8–30 MHz), CMOS (up to 200 MHz), SSTL/HSTL (up to 350 MHz), and differential inputs (up to 710 MHz). The device features low phase jitter of 0.7 ps RMS typical, glitchless frequency adjustments in 1 ppm steps, and independent phase adjustment per driver. Outputs support LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats with configurable voltages.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with true zero ppm accuracy.
• Flexible input reference options include external crystals (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), and differential inputs (5-710 MHz).
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 common clock and Gen 3 SRNS standards.
• Independent frequency increment/decrement feature allows glitchless frequency adjustments in 1 ppm steps.

Applications

• PCIe Gen 1/2/3/4 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 package type, tape and reel specifications, and environmental compliance status. Ensure the I2C pull-up voltage requirements align with the system design, particularly if operating below 2.5 V.

Selection Notes

Select this component for designs requiring multiple independent clock frequencies with high precision and low jitter. Consider the available output formats (LVPECL, LVDS, HCSL, etc.) and supply voltages (1.5 V, 1.8 V, 2.5 V, 3.3 V) to match load requirements. Use ClockBuilder Pro software for configuration.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators and acts as a frequency translator. The device is housed in a space-saving 4 x 4 mm QFN-24 package and includes an internal OTP memory for storing configurations.

Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the Si5338 series. Verify that any substitute maintains the required output frequency range, jitter specifications, and I2C interface compatibility.