SI5338M-B04505-GMR

Overview

The SI5338M-B04505-GMR is a programmable quad clock generator from Skyworks Solutions. It synthesizes four independent output clocks with zero ppm frequency accuracy using MultiSynth technology. The device supports differential and single-ended outputs, including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V, with individual output drivers supporting voltages from 1.5 V to 3.3 V. The maximum input frequency reaches 710 MHz via differential inputs, while the maximum output frequency extends to 710 MHz for specific differential formats. Typical phase jitter is 0.7 ps RMS.

Feature Summary

• MultiSynth technology enables any-frequency synthesis with 0 ppm precision across four independent outputs.
• Flexible output configurations support up to four differential outputs, eight single-ended outputs, or mixed combinations.
• Independent output voltage control allows each driver to operate at 1.5, 1.8, 2.5, or 3.3 V.
• Glitchless frequency adjustments are possible via independent increment/decrement features in 1 ppm steps.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant systems
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pin assignments and factory programming. Confirm that the required I2C pull-up voltage levels match the system design, as register configuration may be necessary for bus voltages below 2.5 V.

Selection Notes

Select this component when low jitter (0.7 ps RMS typ) and high flexibility in output formats are required. Ensure the application utilizes differential inputs for maximum frequency support up to 710 MHz. Verify that the target system can accommodate the 4x4 mm QFN-24 package dimensions and thermal requirements.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces multiple discrete crystal oscillators by providing synthesized frequencies on four drivers. The device integrates an internal PLL and NVM for storing configuration settings, reducing board space and power consumption compared to discrete solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.