SI5338H-B04835-GMR

Overview

The SI5338H-B04835-GMR is a programmable clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports input frequencies up to 710 MHz and generates outputs ranging from 0.16 MHz to 710 MHz across LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. The device operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V with a typical current consumption of 45 mA. Key electrical characteristics include a typical phase jitter of 0.7 ps RMS and zero ppm frequency accuracy. It is housed in a compact 4 x 4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with true zero ppm precision.
• Low phase jitter performance of 0.7 ps RMS typ, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Highly configurable output drivers supporting LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL signal formats.
• I2C/SMBus compatible interface for programming, featuring glitchless frequency adjustments in 1 ppm steps.

Applications

• Ethernet switch/router timing
• PCIe Gen1/2/3/4 clocking
• Processor and FPGA clocking
• Broadcast video/audio timing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact pre-configured frequency plan and output format. Confirm availability status through authorized distributors as stock levels fluctuate. Ensure the I2C pull-up voltage requirements are met if operating below 2.5 V.

Selection Notes

Select this component when low jitter (< 1 ps RMS) and flexible output voltage levels (1.5 V to 3.3 V per driver) are required. Ensure the input reference source matches the supported formats (Crystal, CMOS, Differential). Validate that the required output frequencies fall within the 0.16 MHz to 710 MHz range for the chosen output format.

Part Context

This part belongs to the Si5338 family of I2C-programmable quad clock generators. It replaces multiple discrete crystal oscillators by providing independent frequency synthesis. The 'GMR' suffix indicates it is supplied in a tape and reel packaging format suitable for automated surface-mount assembly.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants such as SI5338A or SI5338N series parts. Verify that the substitute part supports the specific output formats and frequency ranges required by the design before substitution.