SI5338N-B05578-GMR

Overview

The SI5338N-B05578-GMR is a programmable quad clock generator manufactured by Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. The device supports differential and single-ended outputs, accommodating formats such as LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. It operates from a single core supply of 1.8 V, 2.5 V, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Configuration is performed via an I2C/SMBus interface.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four output drivers with 0 ppm accuracy.
• Supports flexible input references including external crystals (8-30 MHz), CMOS (5-200 MHz), and differential inputs up to 710 MHz.
• Configurable output drivers support various signal formats: LVPECL/LVDS (up to 710 MHz), HCSL (up to 250 MHz), and CMOS (up to 200 MHz).
• Features independent output voltage selection per driver (1.5, 1.8, 2.5, or 3.3 V) and glitchless frequency adjustments in 1 ppm steps.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout compatibility and factory programming configurations. Ensure the I2C pull-up voltage aligns with register settings if operating below 2.5 V. Confirm moisture sensitivity handling requirements for the QFN package during storage and assembly.

Selection Notes

Select this component when designing systems requiring multiple independent clock frequencies from a single IC. Ensure the required output format (LVDS, LVPECL, etc.) and frequency range are supported by the specific output driver configuration. Verify that the input reference source matches the supported frequency ranges for crystal, CMOS, or differential inputs.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'N' suffix typically denotes a specific factory-programmed configuration variant within the series. The device replaces multiple discrete oscillators, reducing board space and power consumption while providing high-precision clock synthesis for complex digital systems.

Replacement Considerations

Direct replacements must be sought from the Si5338 family variants with matching factory programming or generic programmable units like the Si5338Q-B-GMR if field reprogramming is feasible. Verify pin-to-pin compatibility and electrical specifications before substitution.