SI5338M-B04945-GMR

Overview

The SI5338M-B04945-GMR is a programmable clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four output drivers with zero ppm precision. It operates within a core supply range of 1.71 V to 3.63 V and supports input frequencies up to 710 MHz. The device features low phase jitter of 0.7 ps RMS typical, independent output voltage configurations (1.5 V, 1.8 V, 2.5 V, or 3.3 V), and glitchless frequency adjustments via I2C/SMBus interface.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four differential output drivers
• Low phase jitter of 0.7 ps RMS typical with high precision zero ppm frequency accuracy
• Flexible input reference supporting 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: 1.5, 1.8, 2.5, or 3.3 V

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4
• Processor and FPGA clocking
• Telecom line cards
• Fibre Channel, SAN

Procurement Notes

Verify the specific ordering suffix 'B04945' against the manufacturer's official documentation to confirm pinout configuration and internal programming parameters. Ensure compatibility with I2C bus voltage levels (1.71 V to 3.63 V) and check for moisture sensitivity handling requirements during assembly.

Selection Notes

Select this component when designing systems requiring independent clock frequencies with varying signal formats (LVPECL, LVDS, HCSL, CMOS, etc.) and supply voltages. Consider the 4x4 mm QFN package constraints and verify that the required input reference frequency falls within the supported ranges for optimal jitter performance.

Part Context

This part belongs to the Si5338 family of I2C-programmable any-frequency, any-output quad clock generators. It is designed to replace multiple discrete crystal oscillators in complex digital systems, offering flexibility in clock distribution through its highly configurable output drivers and advanced synthesis capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify functional equivalence by comparing MultiSynth architecture, I2C register maps, and electrical specifications if considering alternative devices.