SI5338C-B05291-GMR

Overview

The Si5338C-B05291-GMR is a quad clock generator utilizing MultiSynth technology for any-frequency synthesis on four independent output drivers. It supports core supply voltages of 1.8, 2.5, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. The device accepts external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), or differential inputs (5–710 MHz). Outputs are configurable to LVPECL, LVDS, HCSL, CMOS, or SSTL/HSTL formats with independent voltage levels. It operates within a –40 to +85 °C temperature range in a 4x4 mm QFN package.

Feature Summary

• Low phase jitter of 0.7 ps RMS typical
• Zero ppm frequency accuracy via MultiSynth technology
• Flexible input reference supporting crystal, CMOS, SSTL/HSTL, and differential signals
• Independent output voltage selection: 1.5, 1.8, 2.5, or 3.3 V

Applications

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

Procurement Notes

Verify the specific ordering suffix B05291 against Skyworks documentation to confirm factory-programmed frequency and format configurations. Ensure the GMR suffix matches the required tape-and-reel packaging specifications for automated assembly processes.

Selection Notes

Select this component when four independent clock outputs with varying frequencies and signal formats are required from a single source. Verify that the input reference frequency falls within the supported ranges and that the output load capacitance requirements align with the specified rise/fall time constraints for the chosen output format.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces multiple discrete oscillators by providing synthesizable clocks with high precision. The device integrates an internal PLL and MultiSynth dividers to generate outputs without requiring external VCXOs or multiple crystal units.

Replacement Considerations

Direct pin-to-pin replacements within the same package require identical electrical characteristics and programming interfaces. Verify compatibility using ClockBuilder Pro software to ensure register settings and power consumption profiles match the original design requirements.