SI5338C-B05777-GM

Overview

The SI5338C-B05777-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 V, 2.5 V, or 3.3 V and accepts flexible input references up to 710 MHz. Key electrical parameters include a typical phase jitter of 0.7 ps RMS, a maximum output frequency of 710 MHz for differential outputs, and an operating temperature range of –40 °C to +85 °C.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four output drivers with true zero ppm accuracy.
• Supports highly configurable output formats: LVPECL/LVDS (up to 710 MHz), HCSL (up to 250 MHz), CMOS (up to 200 MHz), and SSTL/HSTL (up to 350 MHz).
• Features low phase jitter of 0.7 ps RMS typ and independent frequency increment/decrement for glitchless adjustments.
• Programmable via I2C/SMBus interface with support for spread spectrum modulation and external feedback mode.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS generation
• Ethernet switch/router and 1 GbE/10 GbE timing
• Processor and FPGA clocking
• Telecom line cards and MSAN/DSLAM/PON systems

Procurement Notes

Verify the specific factory-programmed configuration associated with the B05777 suffix against the target design requirements. Confirm that the QFN-24 package dimensions and thermal characteristics meet the PCB layout constraints. Ensure the I2C pull-up voltage levels are compatible with the system bus before integration.

Selection Notes

Select this component when multiple independent clock frequencies with varying signal formats are required from a single IC. The Si5338C variant typically implies specific pre-programmed output configurations; verify these match the application needs. Consider the 0.7 ps RMS jitter performance for high-speed serial links like PCIe or Ethernet. Check if the available input reference options (crystal, CMOS, or differential) align with the system architecture.

Part Context

The SI5338C-B05777-GM belongs to the Si5338 family of I2C-programmable clock generators. This series replaces discrete crystal oscillators and frequency translators in compact designs. The 'C' designation often denotes specific factory-programmed output settings within the broader Si5338 portfolio, while the 'GM' indicates the 24-lead QFN package type.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. When replacing legacy oscillators, ensure the new device's power supply requirements (1.8 V, 2.5 V, or 3.3 V) and I2C address compatibility are verified.