SI5338C-B05412-GM

Overview

The SI5338C-B05412-GM is a programmable quad clock generator 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 from a 1.8 V, 2.5 V, or 3.3 V core supply with a typical current of 45 mA. Key electrical parameters include a maximum input frequency of 710 MHz, a phase jitter of 0.7 ps RMS, and an operating temperature range of –40 °C to +85 °C. It is housed in a 24-lead QFN package.

Feature Summary

• I2C/SMBus programmable interface for flexible configuration
• Low phase jitter of 0.7 ps RMS typical
• Independent output voltage selection (1.5, 1.8, 2.5, or 3.3 V)
• Glitchless frequency adjustment via independent increment/decrement feature

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific factory preset associated with the B05412 suffix against the official Skyworks ordering guide. Confirm that the required output frequencies and signal formats match the pre-programmed configuration. Ensure I2C programming tools are available if field reconfiguration is needed.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single IC. Verify that the target output formats (LVPECL, LVDS, etc.) and supply voltages align with the system design. Check input reference requirements, as the device supports external crystals, CMOS, and differential inputs up to 710 MHz.

Part Context

This part belongs to the Si5338 family of low-jitter clock generators. The 'C' indicates commercial temperature grade, 'B' denotes a factory-preset configuration, and 'GM' specifies the 24-QFN package with tape-and-reel shipping. It replaces discrete oscillators in complex digital systems.

Replacement Considerations

Direct pin-to-pin replacements within the Si5338 family require matching the factory preset configuration. Verify that alternative SKUs provide identical output frequencies and formats. Cross-reference with Si5338Q variants for industrial temperature ranges if environmental conditions exceed commercial limits.