SI5338B-B04871-GMR

Overview

The SI5338B-B04871-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent output drivers with zero ppm precision. The device supports flexible input references, including differential inputs up to 710 MHz and single-ended CMOS inputs up to 200 MHz. Outputs are configurable for LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats. Key electrical parameters include a core supply voltage range of 1.71 V to 3.63 V, a typical operating current of 45 mA, and a maximum phase jitter of 0.7 ps RMS. It operates within an ambient temperature range of –40 °C to +85 °C.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with true zero ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typ, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Highly-configurable output drivers supporting up to four differential outputs, eight single-ended outputs, or mixed configurations.
• Flexible input reference options: external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), or differential (5–710 MHz).

Applications

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

Procurement Notes

Verify the specific factory programming configuration associated with the B04871 suffix against the target design requirements. Confirm that the GMR suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly processes. Ensure I2C pull-up voltages align with the system's logic levels before integration.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single package. Verify that the desired output signal formats (LVPECL, LVDS, etc.) match the load requirements. Check that the input reference source falls within the supported frequency ranges for the chosen interface type. Ensure the power supply rails meet the specified voltage tolerances for stable operation.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators manufactured by Skyworks Solutions. The series is designed to replace multiple discrete oscillators in high-performance digital systems. The B04871 designation represents a specific factory-programmed variant within the broader Si5338 product line.

Replacement Considerations

Direct pin-to-pin replacements within the same family require identical factory programming configurations. Verify that alternative SKUs support the same output formats and frequency specifications. Cross-reference the specific B-code to ensure functional equivalence in the intended application.