SI5338C-B15672-GM

Overview

The SI5338C-B15672-GM is an I2C-programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. The device supports a wide range of input references, including external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential inputs (up to 710 MHz). Outputs are configurable for LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats, with individual supply voltages of 1.5, 1.8, 2.5, or 3.3 V per driver. It operates from a single core supply of 1.8, 2.5, or 3.3 V, features low phase jitter of 0.7 ps RMS typical, and is housed in a 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm accuracy.
• Supports PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliance.
• Flexible output drivers support up to four differential outputs, eight single-ended clocks, or mixed configurations.
• Low phase jitter of 0.7 ps RMS typical; highly configurable spread spectrum (SSC) on any output.

Applications

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

Procurement Notes

Verify the specific factory configuration code B15672 against the official Skyworks ordering guide to confirm pre-programmed frequencies and settings. Confirm the -GM suffix indicates tray packaging. Check current lifecycle status as programmable devices may have limited availability or end-of-life notices.

Selection Notes

Select this part when four independent clock signals with varying frequencies and voltage levels are required from a single component. Ensure the input reference matches the supported ranges (crystal, CMOS, or differential). Verify that the required output formats (LVPECL, LVDS, etc.) align with the device's capabilities and that the 4x4 mm QFN footprint fits the PCB layout constraints.

Part Context

This component belongs to the Si5338 family of I2C-programmable clock generators. The 'C' typically denotes a specific performance grade or feature set within the series, while 'B15672' represents a unique factory programming configuration. The '-GM' suffix specifies the tape and reel or tray packaging option for surface-mount assembly.

Replacement Considerations

Direct replacements must be from the Si5338 family with compatible pinouts and electrical characteristics. Verify that alternative part numbers support the same output formats and frequency ranges. Cross-reference the factory programming data if the original configuration cannot be replicated via software tools like ClockBuilder Pro.