SI5338M-B04369-GMR

Overview

The SI5338M-B04369-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology for independent frequency synthesis on four output drivers. It supports any-frequency generation with zero ppm precision and features low phase jitter of 0.7 ps RMS typical. The device accepts flexible inputs including external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential signals (5–710 MHz). Outputs are configurable for LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats, operating at supply voltages of 1.8, 2.5, or 3.3 V. It is housed in a compact 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Highly configurable output drivers supporting up to four differential outputs, eight single-ended outputs, or mixed configurations.
• Programmable via I2C/SMBus interface with support for glitchless frequency adjustments and spread spectrum modulation.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS applications
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing

Procurement Notes

Verify the specific ordering suffix B04369 against the manufacturer's current datasheet to confirm factory programming parameters. Ensure compatibility with I2C bus voltage levels if operating below 2.5 V by checking register settings. Confirm moisture sensitivity handling requirements during storage and assembly processes.

Selection Notes

Select this component when independent frequency synthesis across multiple outputs is required without cross-coupling. Verify that the desired output signal formats (LVPECL, LVDS, CMOS, etc.) and frequencies fall within the specified operational ranges. Consider the 45 mA typical core supply current for power budget calculations and ensure the 4x4 mm QFN footprint fits the PCB layout constraints.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'M' suffix typically denotes specific output enable control configurations, while the alphanumeric code defines the pre-programmed frequency plan. It serves as a replacement for multiple discrete crystal oscillators in complex digital systems requiring precise timing relationships.

Replacement Considerations

Direct replacements must match the 24-QFN package and pinout. Verify that substitute devices support the same input/output frequency ranges and jitter specifications. Check for compatibility with existing I2C programming tools and register maps if reprogramming is required.