SI5338A-B05431-GM

Overview

The SI5338A-B05431-GM 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 differential and single-ended outputs including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. Maximum input and output frequencies reach 710 MHz. It operates from a 1.8 V, 2.5 V, or 3.3 V core supply with typical current of 45 mA. Key electrical parameters include 0.7 ps RMS typical jitter, 1.71 V to 3.63 V supply range, and operation from -40 °C to +85 °C in a 24-QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero ppm accuracy.
• Low phase jitter of 0.7 ps RMS typical, compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS standards.
• Highly configurable output drivers supporting up to four differential outputs, eight single-ended outputs, or mixed configurations.
• Independent frequency increment/decrement and phase adjustment features for glitchless adjustments.

Applications

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

Procurement Notes

Verify the specific factory programming code associated with the B05431 suffix against the required system specifications. Confirm that the QFN-24 package dimensions and thermal characteristics align with the PCB land pattern requirements. Ensure I2C pull-up voltages are compatible with the selected core supply voltage.

Selection Notes

Select this component when independent frequency synthesis across multiple outputs is required without external crystal oscillators. Verify that the desired output formats (LVPECL, LVDS, etc.) and frequencies fall within the supported ranges. Consider the 0.7 ps RMS jitter performance for high-speed serial link applications like PCIe.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'A' indicates the specific silicon revision or variant, while 'B05431' denotes the factory-programmed configuration stored in non-volatile memory. The 'GM' suffix specifies the lead-free tape and reel packaging option.

Replacement Considerations

Direct replacements must match the 24-QFN package and I2C interface. Other Si5338 variants with different factory codes may require reprogramming via ClockBuilder Pro software if the existing NVM content is not suitable.