SI5338M-B05695-GMR

Overview

The SI5338M-B05695-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. It supports differential and single-ended outputs including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. The device operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V and accepts inputs ranging from external crystals (8–30 MHz) to differential clocks up to 710 MHz. Packaged in a 4x4 mm QFN-24, it features low phase jitter of 0.7 ps RMS typical.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four output drivers with 0 ppm accuracy.
• Supports flexible input references: external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential (5–710 MHz).
• Independently configurable output drivers support various signal formats (LVPECL/LVDS/CML/HCSL/CMOS/SSTL/HSTL) and voltages (1.5, 1.8, 2.5, or 3.3 V).
• Features glitchless frequency adjustments via independent increment/decrement and phase adjustment with <20 ps steps.

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.
• Telecom line cards and MSAN/DSLAM/PON equipment.

Procurement Notes

Verify the specific ordering suffix B05695 against the manufacturer's current datasheet to confirm the exact pre-programmed configuration, as this suffix defines the factory-set register values for frequency and format. Ensure I2C pull-up voltage compatibility if operating below 2.5 V by checking register settings. Confirm package marking and RoHS compliance status prior to procurement.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single low-jitter synthesizer. Ensure the required output frequencies fall within the supported ranges: LVPECL/LVDS/CML up to 710 MHz, HCSL up to 250 MHz, and CMOS up to 200 MHz. Verify that the input reference source matches one of the supported types (crystal, CMOS, or differential) and that the system power budget accommodates the typical 45 mA core supply current.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'M' suffix typically denotes a specific commercial temperature range or variant within the broader Si533x portfolio, while 'GMR' indicates tape-and-reel packaging. The base Si5338 architecture provides space-saving integration for high-performance timing applications requiring multiple distinct clock frequencies.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants with different pre-programming suffixes (e.g., Si5338C, Si5338Q). When substituting, verify that the new part's factory programming matches the original design's frequency and format requirements, as the electrical characteristics remain consistent across the series.