SI5338C-B04853-GMR

Overview

The SI5338C-B04853-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent clocks with zero ppm precision from a single core supply of 1.8, 2.5, or 3.3 V. The device supports input frequencies up to 710 MHz and generates outputs ranging from 0.16 MHz to 710 MHz across LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats. Key electrical parameters include a typical RMS jitter of 0.7 ps, a maximum output frequency of 710 MHz, and an operating temperature range of -40°C to +85°C.

Feature Summary

• MultiSynth technology enables any-frequency synthesis on four differential output drivers with 0 ppm accuracy.
• Supports flexible input references including external crystals (8-30 MHz), CMOS (up to 200 MHz), and differential inputs (up to 710 MHz).
• Features low phase jitter of 0.7 ps RMS typ and independent glitchless frequency/phase adjustments.
• Configurable spread spectrum (SSC) on any output with adjustable deviation and modulation rates.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant timing.
• Ethernet switch/router and 1 GbE/10 GbE interfaces.
• Processor and FPGA clocking systems.
• Broadcast video/audio timing distribution.

Procurement Notes

Verify the specific B04853 suffix configuration against the official Skyworks datasheet to ensure correct pinout and functional settings. Confirm that the QFN-24 package dimensions match the target PCB land pattern requirements. Check for moisture sensitivity level compliance during storage and reflow soldering processes.

Selection Notes

Select this component when independent, any-frequency clock generation is required for multiple loads. Ensure the input reference source matches the supported voltage levels and formats. Verify that the required output drive strength and voltage levels (1.5V to 3.3V) are compatible with the destination devices.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces multiple discrete crystal oscillators in complex digital systems. The device integrates PLL synthesis and output buffering into a compact 4x4 mm QFN package, reducing board space compared to discrete solutions.

Replacement Considerations

Direct replacements within the Si5338 family require matching the output count and frequency capabilities. Verify that alternative SKUs support the same input/output signal formats and jitter specifications. Consult the manufacturer's compatibility matrix for valid cross-references.