SI5338M-B04373-GMR

Overview

The SI5338M-B04373-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology for independent frequency synthesis on four output drivers. It supports differential and single-ended outputs with frequencies up to 710 MHz (LVDS/LVPECL) or 200 MHz (CMOS). 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. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V and is programmed via an I²C/SMBus interface.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four output drivers with 0 ppm precision.
• Low phase jitter of 0.7 ps RMS typical; compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.
• Highly-configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats.
• Independent frequency increment/decrement and phase adjustment capabilities with glitchless operation.

Applications

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

Procurement Notes

Verify the specific factory-programmed configuration associated with the B04373 suffix against the system requirements. Confirm that the required input reference type (crystal, CMOS, or differential) matches the available pins and that the output voltage levels align with the target loads. Ensure programming software compatibility for final validation.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single package. Verify that the desired output signal formats (differential vs. single-ended) fit within the simultaneous output constraints. Check that the input reference source falls within the supported frequency ranges for the chosen pin configuration.

Part Context

This part belongs to the Si5338 family of I²C-programmable clock generators. The 'M' designation typically indicates a custom factory-programmed variant with specific frequencies and configurations stored in non-volatile memory, distinguishing it from generic user-programmable versions.

Replacement Considerations

Direct replacements must be from the Si5338 family with compatible pinouts and electrical characteristics. Verify that alternative part numbers support the same output formats and frequency ranges. Cross-reference the factory-programmed settings if replacing a pre-configured unit.