SI5338C-B04993-GMR

Overview

The SI5338C-B04993-GMR is a programmable clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports input frequencies up to 710 MHz and generates outputs with typical phase jitter of 0.7 ps RMS. The device operates on a single core supply voltage of 1.8 V, 2.5 V, or 3.3 V and features independently configurable output voltages (1.5 V, 1.8 V, 2.5 V, or 3.3 V). It is housed in a compact 4 x 4 mm QFN-24 package.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four differential output drivers with zero ppm precision.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential inputs (up to 710 MHz).
• Programmable via I2C/SMBus interface with support for glitchless frequency adjustments and spread spectrum generation.

Applications

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

Procurement Notes

Verify the specific B04993 suffix configuration against the official Skyworks datasheet before procurement. Confirm that the required output formats and frequencies align with the device's electrical specifications. Ensure compatibility with the I2C programming environment using ClockBuilder Pro software.

Selection Notes

Select this component when low jitter and flexible frequency synthesis are required for high-speed serial interfaces. Verify that the target application supports the available output driver formats such as LVPECL, LVDS, HCSL, or CML. Check that the system power budget accommodates the typical 45 mA core supply current across the operating temperature range.

Part Context

This part belongs to the Si5338 family of quad clock generators. The 'C' designation typically indicates specific performance grades or output configurations within the series. The '-GMR' suffix denotes a tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

Direct replacements within the Si5338 family include SI5338A-B-GMR or SI5338N-B-GMR. Verify pinout compatibility and ensure that the substitute part supports the specific frequency requirements and output drive strengths needed for the design.