SI5338B-B09792-GMR

Overview

The SI5338B-B09792-GMR is an I2C-programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency up to 710 MHz on four independent outputs with zero ppm precision. The device supports differential (LVPECL, LVDS) and single-ended (CMOS, HCSL, SSTL/HSTL) formats with independently configurable supply voltages of 1.5, 1.8, 2.5, or 3.3 V per driver. Key electrical parameters include a typical core supply current of 45 mA at 100 MHz operation, a maximum input frequency of 710 MHz for differential inputs, and a typical RMS jitter of 0.7 ps. It operates within a temperature range of –40 to +85 °C in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), and differential signals (up to 710 MHz).
• Independent output voltage configuration per driver supporting 1.5, 1.8, 2.5, or 3.3 V levels without external level translators.

Applications

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

Procurement Notes

Verify the specific B09792 ordering suffix against the manufacturer's latest documentation to confirm the exact frequency plan and output configuration. Confirm that the GMR suffix aligns with the required tape-and-reel packaging specifications for the manufacturing line. Ensure the design accounts for the 24-QFN thermal requirements as specified in the datasheet.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single source. The device replaces discrete oscillators and level shifters, reducing board space and power consumption. Verify that the required output signal formats (LVDS, LVPECL, CMOS, etc.) match the available driver configurations and that the target frequencies fall within the supported ranges for each format.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'B' variant typically denotes specific output drive strengths or configurations compared to other family members like the 'A' or 'Q' series. The device integrates programmability features such as glitchless frequency adjustment and spread spectrum modulation to optimize EMI performance.

Replacement Considerations

Direct pin-to-pin replacements within the same family may exist but require verification of the specific frequency plan encoded in the ordering suffix. Other Skyworks Si53xx series devices offer similar functionality but may differ in output count, maximum frequency, or jitter performance. Consult the official cross-reference guide for validated substitutes.