SI5338F-B04216-GM

Overview

The Skyworks Solutions SI5338F-B04216-GM is an I2C-programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent output clocks with 0 ppm precision, supporting frequencies up to 710 MHz on differential outputs and 200 MHz on single-ended CMOS outputs. The device 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. It accepts flexible input references including external crystals (8–30 MHz), CMOS (up to 200 MHz), SSTL/HSTL (up to 350 MHz), and differential inputs (up to 710 MHz). Each output driver supports configurable formats such as LVPECL, LVDS, HCSL, CML, and SSTL/HSTL.

Feature Summary

• I2C/SMBus programmable quad clock generator with 0 ppm frequency accuracy
• Low phase jitter performance: 0.7 ps RMS typical
• Flexible input support: External crystal, CMOS, SSTL/HSTL, and differential signals
• Independent output configuration for LVPECL, LVDS, HCSL, CML, and CMOS formats
• Glitchless frequency adjustment via independent increment/decrement feature

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant systems
• Ethernet switch and router timing
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards and MSAN/DSLAM/PON equipment

Procurement Notes

Verify the specific B04216 factory programming code against the datasheet's ordering information table to confirm the exact synthesized frequencies and output configurations. Ensure the required I2C pull-up voltage compatibility matches the system design, particularly if operating below 2.5 V. Confirm package type is 24-QFN (4x4 mm) and check for RoHS compliance status in the latest manufacturer documentation.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single programmable source. Ensure the application requires independent voltage levels per output driver, as the Si5338 allows separate VDDO settings. Verify that the input reference signal falls within the supported frequency ranges for the chosen format. Consider the thermal resistance characteristics if high-frequency operation at maximum load currents is expected.

Part Context

The SI5338 belongs to Skyworks' MultiSynth family of clock generators designed for high-performance timing applications. The 'F' suffix typically denotes a specific output configuration variant within the series, while 'B04216' represents the factory-programmed frequency set. This part replaces legacy crystal oscillator arrays in complex digital systems requiring precise, multi-frequency synchronization.

Replacement Considerations

Direct pin-to-pin replacements within the Si5338 family may exist but require verification of the specific B-code programming. Compare jitter specifications and output drive strengths against existing designs. Ensure the replacement supports the same I2C interface protocol and voltage levels.