SI5338J-B04769-GM

Overview

The SI5338J-B04769-GM is a programmable quad clock generator utilizing Skyworks MultiSynth technology. It synthesizes any frequency on four independent output drivers with zero ppm precision. The device supports flexible input references, including differential inputs up to 710 MHz and external crystals from 8 to 30 MHz. Outputs are configurable for LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats, supporting frequencies up to 710 MHz. It operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V, consuming typically 45 mA. Key features include low phase jitter (0.7 ps RMS typ), glitchless frequency adjustment, spread spectrum capability, and I2C/SMBus programming.

Feature Summary

• Four independent output drivers capable of synthesizing any frequency with 0 ppm accuracy using MultiSynth technology
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 standards
• Flexible input options including differential clocks up to 710 MHz, CMOS, and external crystals (8-30 MHz)
• Configurable output formats (LVPECL, LVDS, CML, HCSL, CMOS, SSTL, HSTL) with independent voltage levels (1.5V, 1.8V, 2.5V, 3.3V)

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS generation
• Ethernet switch/router clocking (1 GbE and 10 GbE)
• Processor and FPGA clock distribution
• Broadcast video/audio timing systems

Procurement Notes

Verify the specific ordering suffix B04769 against the manufacturer's current documentation to confirm factory configuration parameters. Ensure compatibility with the I2C interface voltage levels (1.71 V to 3.63 V) required for proper communication. Confirm that the QFN-24 package land pattern matches the recommended PCB layout specifications provided in the datasheet.

Selection Notes

Select this component when designing systems requiring multiple asynchronous clock domains from a single source. Ensure the input reference signal meets the slew rate requirements (>0.3 V/ns for differential, >1.0 V/ns for single-ended) to maintain optimal jitter performance. Verify that the required output voltage levels and drive strengths align with the load capacitance and termination requirements of the destination devices.

Part Context

This part belongs to the Si5338 family of high-performance, low-jitter clock generators. The family utilizes patented MultiSynth technology to replace multiple crystal oscillators. Variants within the series differ primarily by pre-programmed frequency configurations and output driver settings stored in non-volatile memory, accessible via I2C programming tools like ClockBuilder Pro.

Replacement Considerations

Direct pin-to-pin replacements within the Si5338 family may require reprogramming if the target part has different default frequency configurations. Verify that the substitute part supports the same output formats and voltage levels. Consult the manufacturer's cross-reference guide for confirmed compatible alternatives.