SI5338M-B04368-GM

Overview

The SI5338M-B04368-GM 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 including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. The device operates with a core supply of 1.8 V, 2.5 V, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. It accepts flexible input references up to 710 MHz via differential inputs or 200 MHz via single-ended inputs.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with zero ppm precision.
• Supports highly configurable output formats: LVPECL/LVDS/CML (up to 710 MHz), HCSL (up to 250 MHz), and CMOS/SSTL/HSTL.
• Low phase jitter performance of 0.7 ps RMS typical.
• Programmable via I2C/SMBus interface with support for glitchless frequency adjustments in 1 ppm steps.

Applications

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

Procurement Notes

Verify the specific factory programming configuration associated with the B04368 suffix against the design requirements. Confirm that the QFN-24 package dimensions and thermal characteristics meet the PCB layout constraints. Ensure the I2C pull-up voltage levels are compatible with the system bus voltage.

Selection Notes

Select this component when independent frequency synthesis on multiple outputs is required without external crystal oscillators. Verify that the desired output frequencies fall within the supported ranges for the selected output format (e.g., LVDS up to 710 MHz). Check if the jitter specifications meet the target application's sensitivity requirements.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'M' designation typically indicates a specific factory-programmed configuration variant within the series. The device replaces multiple discrete crystal oscillators, reducing board space and power consumption while providing flexible clock distribution.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants such as SI5338A, SI5338B, or SI5338C, provided their factory-programmed frequencies match the design needs. Ensure the replacement part supports the required output formats and jitter performance.