SI5338N-B05414-GMR

Overview

The SI5338N-B05414-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency up to 710 MHz on four independent outputs with zero ppm accuracy. The device supports differential and single-ended formats including LVPECL, LVDS, 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 features include glitchless frequency adjustment in 1 ppm steps, independent phase adjustment with <20 ps resolution, and configurable spread spectrum generation. It is housed in a 24-lead QFN package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with true zero 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).
• Provides low phase jitter of 0.7 ps RMS typ and supports highly configurable spread spectrum (SSC) on any output.
• Features independent frequency increment/decrement for glitchless adjustments and independent phase adjustment with <20 ps step accuracy.

Applications

• PCIe Gen 1/2/3/4 Common Clock and SRNS compliant timing
• Ethernet switch/router and 1 GbE/10 GbE interfaces
• Processor and FPGA clocking systems
• Broadcast video/audio timing distribution

Procurement Notes

Verify the specific factory-programmed NVM configuration associated with the B05414 suffix against the system requirements. Confirm that the I2C/SMBus interface voltage levels match the host controller logic. Ensure proper decoupling capacitors are placed near the VDD and VDDO pins as specified in the datasheet application circuits to maintain signal integrity and power stability.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single source. Ensure the target output format (LVPECL, LVDS, etc.) and frequency range fall within the supported limits for each driver. Verify that the input reference source matches one of the supported types (crystal, CMOS, or differential). Consider the thermal resistance characteristics if operating at maximum load currents.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'N' designation typically indicates a custom factory-programmed variant with settings stored in non-volatile memory. The '-GMR' suffix denotes the tape and reel packaging format suitable for automated surface-mount assembly. It replaces discrete crystal oscillators in complex digital designs.

Replacement Considerations

Direct pin-to-pin replacements within the same family require identical NVM programming configurations. Verify that alternative SKUs support the exact same output frequencies and formats. Check for any differences in the recommended PCB land pattern or thermal pad requirements between the original and substitute parts.