SI5338N-B05025-GM

Overview

The SI5338N-B05025-GM is a programmable quad clock generator utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended outputs with frequencies up to 710 MHz, achieving 0 ppm precision. The device features low phase jitter of 0.7 ps RMS typical, configurable spread spectrum, and independent glitchless frequency/phase adjustments. It operates from a single core supply of 1.8, 2.5, or 3.3 V and is programmed via an I2C/SMBus interface.

Feature Summary

• MultiSynth™ Technology: Generates four independent clocks with 0 ppm accuracy using patented synthesis architecture.
• Flexible Output Drivers: Supports LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats with independent voltage levels (1.5V–3.3V).
• Low Jitter Performance: Typical RMS jitter of 0.7 ps; compliant with PCIe Gen 1-4 Common Clock and Gen 3 SRNS standards.
• Glitchless Adjustments: Independent frequency increment/decrement in 1 ppm steps and phase adjustment with <20 ps resolution.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS systems
• Ethernet switch/router clocking (1 GbE and 10 GbE)
• Processor and FPGA clock generation
• Broadcast video/audio timing distribution
• Telecom line cards and MSAN/DSLAM/PON equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet revision to confirm pinout compatibility and factory programming configuration. Ensure the I2C pull-up voltage matches the system bus requirements, as register modifications may be necessary for voltages below 2.5 V. Confirm thermal management meets the junction temperature limits under maximum load conditions.

Selection Notes

Select this component when zero ppm frequency accuracy across multiple disparate clock domains is required. It replaces discrete oscillators by synthesizing any frequency from inputs ranging from 5 MHz to 710 MHz. Choose based on the required output format (LVDS/LVPECL vs. CMOS) and ensure the input reference source matches the supported AC or DC coupled configurations.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It is designed to replace multiple crystal oscillators in high-performance digital systems. The device integrates a PLL and MultiSynth stages within a compact 4x4 mm QFN package, offering significant board space savings compared to discrete oscillator solutions.

Replacement Considerations

Direct replacements include other variants within the Si5338 family (e.g., SI5338Q, SI5338C) provided they share the same pinout and support the required output frequencies. Verify that alternative parts support the specific output formats and jitter requirements of the target application.