SI5338C-B04168-GMR

Overview

The SI5338C-B04168-GMR is a programmable quad clock generator from Skyworks Solutions. It synthesizes four independent output clocks with 0 ppm precision using MultiSynth technology. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. Maximum input frequency reaches 710 MHz via differential inputs, while outputs support up to 710 MHz for differential and 200 MHz for CMOS. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V, with typical current consumption of 45 mA. Jitter performance is characterized by 0.7 ps RMS random jitter.

Feature Summary

• MultiSynth™ Technology: Generates four independent clocks with true zero ppm accuracy.
• Flexible Output Formats: Supports LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL.
• Low Phase Jitter: Typical 0.7 ps RMS random jitter across all outputs.
• I2C Programmability: Configurable via I2C/SMBus interface with glitchless frequency/phase adjustments.

Applications

• PCIe Gen 1/2/3/4 Common Clock and SRNS
• Ethernet Switch/Router (1 GbE and 10 GbE)
• Processor and FPGA Clocking
• Broadcast Video/Audio Timing
• Telecom Line Cards and MSAN/DSLAM/PON

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest datasheet revision to confirm pinout compatibility and factory programming settings. Confirm that the package type matches the required PCB land pattern. Ensure the I2C pull-up voltage aligns with the system bus requirements before integration.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source. Verify that the desired output signal format (LVDS, CMOS, etc.) and voltage levels are supported by the specific output drivers. Check that the input reference frequency falls within the supported range for the chosen input mode.

Part Context

This part belongs to the Si5338 family of I2C-programmable any-frequency, any-output quad clock generators. It replaces discrete crystal oscillators and frequency translators in high-performance timing applications. The device integrates a PLL and four MultiSynth dividers into a compact 4x4 mm QFN-24 package.

Replacement Considerations

Direct replacements within the same family include other Si5338 variants with different factory configurations. Verify that substitute parts maintain the same package outline and pin assignments. Cross-reference the specific output frequencies and formats to ensure functional equivalence.