SI5338C-B05575-GM

Overview

The SI5338C-B05575-GM is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates with a core supply of 1.8, 2.5, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Input references range from external crystals (8–30 MHz) to differential clocks up to 710 MHz. Outputs are configurable for frequencies up to 710 MHz depending on the format.

Feature Summary

• I2C-programmable synthesis with zero ppm accuracy using patented MultiSynth technology
• Four independently configurable outputs supporting LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats
• Low phase jitter performance of 0.7 ps RMS typical across all outputs
• Flexible input options including crystal, CMOS, SSTL/HSTL, and differential signals up to 710 MHz

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant systems
• Ethernet switch and router timing
• Processor and FPGA clocking solutions
• Broadcast video and audio timing distribution
• Telecom line cards and MSAN/DSLAM/PON equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout compatibility and factory programming settings. Ensure the I2C pull-up voltage matches the system bus requirements, as register adjustments may be necessary for voltages below 2.5 V. Confirm package integrity upon receipt due to moisture sensitivity classification.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source with low jitter constraints. Evaluate the output driver voltage requirements (1.5, 1.8, 2.5, or 3.3 V) to ensure compatibility with downstream logic. Consider the input reference type and frequency range to verify support for the existing system oscillator or clock source.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators and frequency translators in complex digital systems. The device integrates PLL and MultiSynth stages within a compact 4x4 mm QFN-24 package, offering space savings compared to multi-oscillator designs.

Replacement Considerations

Direct replacements must match the 24-QFN package and I2C interface. Verify that alternative parts support the same output formats and jitter specifications. Check if the substitute requires different programming software or has varying power consumption characteristics under similar load conditions.