SI5338C-B10647-GMR

Overview

The SI5338C-B10647-GMR is a programmable quad clock generator from Skyworks Solutions. It synthesizes four independent output clocks with 0 ppm precision using MultiSynth technology. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V, with individual output supplies up to 3.63 V. Maximum input frequency reaches 710 MHz via differential inputs, while outputs support frequencies up to 710 MHz for differential and 350 MHz for single-ended configurations.

Feature Summary

• MultiSynth technology enables any-frequency synthesis with zero ppm accuracy across four independent drivers.
• Flexible output formats include LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL with independent voltage levels (1.5V to 3.3V).
• Low phase jitter performance, typically 0.7 ps RMS for GbE applications.
• I2C/SMBus programming interface with glitchless frequency adjustment in 1 ppm steps.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant systems.
• Ethernet switch and router timing.
• Processor and FPGA clocking solutions.
• Broadcast video/audio timing distribution.

Procurement Notes

Verify the specific factory configuration encoded in the B10647 suffix against the target design requirements. Confirm that the I2C pull-up voltages align with the system bus specifications, as register adjustments may be necessary for voltages below 2.5 V. Ensure ESD handling protocols are followed due to the sensitivity of the CMOS inputs.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single package. Validate that the desired output signal formats match the supported driver types. Check thermal resistance values if operating at maximum current loads. Consider the 4x4 mm QFN-24 package dimensions for PCB layout constraints.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators and frequency translators. The device integrates a PLL and four MultiSynth dividers within a compact footprint, designed for high-density electronic systems requiring precise timing synchronization.

Replacement Considerations

Direct pin-to-pin replacements within the same family require identical factory configurations. Verify that alternative SKUs support the same output frequencies and signal formats. Cross-referencing with other Si533x variants requires checking register compatibility and power supply requirements.