SI5338C-B04376-GMR

Overview

The SI5338C-B04376-GMR 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 flexible input references including external crystals (8–30 MHz), CMOS, SSTL/HSTL, and differential inputs up to 710 MHz. Outputs are configurable for LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats with independent supply voltages of 1.5, 1.8, 2.5, or 3.3 V. Key electrical parameters include a core supply voltage range of 1.71–3.63 V, typical operating current of 45 mA, and low phase jitter of 0.7 ps RMS.

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 input reference options: external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential (5–710 MHz).
• Independent output voltage per driver selectable at 1.5, 1.8, 2.5, or 3.3 V.

Applications

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

Procurement Notes

Verify the specific factory configuration code embedded in the suffix B04376 against the target design requirements using Skyworks ClockBuilder Pro software. Confirm that the QFN-24 package thermal characteristics and moisture sensitivity levels align with the assembly process specifications.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single programmable source. Ensure the required output frequencies fall within the supported ranges for the chosen signal format (e.g., LVDS up to 710 MHz, CMOS up to 200 MHz). Validate that the input reference source matches one of the supported interface types.

Part Context

This part belongs to the Si5338 family of low-jitter clock generators. The 'C' indicates a specific factory programming configuration, while 'GMR' denotes the tape-and-reel packaging format. It is manufactured by Skyworks Solutions, Inc., formerly Silicon Laboratories.

Replacement Considerations

Direct pin-to-pin replacements within the same family require identical factory configurations. Verify compatibility with existing PCB layouts and ensure that the replacement part supports the necessary output formats and frequencies for the application.