SI5338A-B05246-GMR

Overview

The SI5338A-B05246-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency up to 710 MHz with zero ppm precision on four independent outputs. The device supports differential and single-ended formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. It operates from a 1.8 V, 2.5 V, or 3.3 V core supply with a typical current of 45 mA. Key electrical parameters include a maximum input frequency of 710 MHz, a typical RMS jitter of 0.7 ps, and an operating temperature range of -40 °C to +85 °C.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with 0 ppm accuracy.
• Supports flexible input references: external crystals (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), and differential inputs (5-710 MHz).
• Configurable output drivers support various signal formats and independent supply voltages (1.5, 1.8, 2.5, or 3.3 V).
• Features glitchless frequency adjustments in 1 ppm steps and independent phase adjustment with <20 ps resolution.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant systems
• Ethernet switch/router and 1 GbE/10 GbE interfaces
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards and MSAN/DSLAM/PON

Procurement Notes

Verify the specific factory configuration associated with the B05246 suffix against the official Skyworks ordering guide. Confirm that the I2C address and output enable states match the target design requirements. Ensure the QFN-24 package land pattern adheres to the recommended PCB layout specifications for thermal and electrical performance.

Selection Notes

Select this component when independent frequency synthesis across multiple domains is required without external oscillators. Verify that the desired output frequencies fall within the supported ranges for the chosen driver format (e.g., LVDS up to 710 MHz, CMOS up to 200 MHz). Ensure the input reference source matches the compatible voltage levels and formats specified in the datasheet.

Part Context

This part belongs to the Si5338 family of high-performance clock generators. The 'A' designation typically indicates the 710 MHz capability variant. The '-GMR' suffix denotes the tape-and-reel packaging format suitable for automated surface-mount assembly. The device replaces multiple discrete crystal oscillators in complex digital systems.

Replacement Considerations

Direct pin-to-pin replacements within the same family include other Si5338 variants such as SI5338B or SI5338Q series parts, provided their specific frequency limits and output configurations align with the application needs. Always verify register compatibility and NVM programming requirements when substituting.