SI5338C-B04726-GMR

Overview

The SI5338C-B04726-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes four independent outputs with zero ppm accuracy, supporting frequencies up to 710 MHz on differential drivers and 200 MHz on CMOS. The device operates from a single core supply of 1.8, 2.5, or 3.3 V within a 4x4 mm QFN-24 package. Key electrical parameters include a typical phase jitter of 0.7 ps RMS, a maximum input frequency of 710 MHz, and an operating temperature range of -40°C to +85°C.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero ppm precision.
• Low phase jitter performance of 0.7 ps RMS typ, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Flexible input reference options including external crystals (8–30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz.
• Highly configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats.

Applications

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

Procurement Notes

Verify the specific factory configuration code B04726 against the official Skyworks ordering guide to ensure correct initial frequency and format settings. Confirm that the GMR suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly processes.

Selection Notes

Select this component when low jitter (<1 ps RMS) and high flexibility are required for multiple clock domains. Ensure the target application supports I2C programming via ClockBuilder Pro software. Verify that the required output voltage levels (1.5V, 1.8V, 2.5V, or 3.3V) match the load requirements.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'C' in the model number typically denotes a specific performance grade or feature set within the series, while 'B04726' represents the unique factory configuration defining the default output frequencies and formats upon power-up.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants such as SI5338A, SI5338B, or SI5338Q models. Substitution requires verifying that the replacement part's factory configuration matches the original design's frequency and format requirements.