SI5338J-B04769-GMR

Overview

The SI5338J-B04769-GMR is a programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with 0 ppm precision. The device supports differential and single-ended outputs, including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats. It operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Configuration is managed via an I²C/SMBus interface.

Feature Summary

• I2C-programmable synthesis for any frequency (< 200 MHz) on four outputs
• Low phase jitter of 0.7 ps RMS typical
• Flexible input reference supporting external crystals (8-30 MHz), CMOS, SSTL/HSTL, and differential inputs
• Independent output voltage configuration per driver (1.5, 1.8, 2.5, or 3.3 V)

Applications

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

Procurement Notes

Verify the specific ordering suffix B04769 against the manufacturer's official documentation to confirm the exact pre-configured frequency plan and pinout assignment. Ensure compatibility with the target system's I2C bus voltage levels and power supply requirements before integration.

Selection Notes

Select this component when zero ppm frequency accuracy is required across multiple independent clocks. Verify that the desired output frequencies fall within the supported ranges for the chosen signal format (e.g., LVDS up to 710 MHz, CMOS up to 200 MHz). Confirm that the input reference source matches one of the supported types: crystal, CMOS, SSTL/HSTL, or differential.

Part Context

This part belongs to the Si5338 family of high-performance, low-jitter clock generators. The family shares common architectural features such as the MultiSynth™ technology and QFN-24 package, but individual part numbers are distinguished by their specific factory-programmed frequency plans and output configurations.

Replacement Considerations

Direct replacements must match the Si5338 family specifications. Verify that alternative parts support the same I2C programming interface, output drive strengths, and jitter performance metrics required by the application design.