SI5338M-B04122-GMR

Overview

The SI5338M-B04122-GMR is an I2C-programmable quad clock generator from Skyworks Solutions. It synthesizes any frequency on four output drivers using MultiSynth technology, achieving zero ppm precision. The device supports differential and single-ended outputs with independent voltage configurations (1.5V to 3.3V). Key electrical parameters include a core supply of 1.8V, 2.5V, or 3.3V, typical operating current of 45 mA, and input frequencies up to 710 MHz. Output formats include LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. It features low phase jitter of 0.7 ps RMS typ and operates within a temperature range of -40°C to +85°C in a 24-QFN package.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm precision.
• Supports PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliance.
• Flexible input reference options including external crystals (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), and differential inputs (5-710 MHz).
• Independent output voltage per driver: 1.5, 1.8, 2.5, or 3.3 V.

Applications

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

Procurement Notes

Verify the specific ordering suffix B04122 against the official Skyworks Si5338 datasheet to confirm the exact pre-configured frequency plan and output settings. Ensure compatibility with the target system's I2C bus voltage levels (1.71V to 3.63V) and check for moisture sensitivity handling requirements during storage and assembly.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single IC. Verify that the desired output signal formats (LVPECL, LVDS, CMOS, etc.) and frequencies fall within the specified ranges. Confirm that the input source matches one of the supported types (crystal, CMOS, or differential). Consider the power consumption and thermal characteristics if multiple outputs are active at high frequencies.

Part Context

The SI5338M-B04122-GMR belongs to the Si5338 family of programmable clock generators. This series replaces multiple discrete crystal oscillators with a single flexible solution. The 'M' variant typically denotes specific output drive strengths or configurations, while the suffix indicates a factory-programmed frequency plan. It is designed for space-constrained applications requiring low jitter and high configurability.

Replacement Considerations

Direct replacements must be from the Si5338 family with compatible pinouts and electrical specifications. Verify that alternative part numbers support the same output formats and frequency ranges. Check for differences in programming interfaces or NVM configuration requirements.