SI5338N-B05577-GM

Overview

The SI5338N-B05577-GM is a programmable quad clock generator from Skyworks Solutions. It synthesizes four independent output clocks with zero ppm frequency accuracy using MultiSynth technology. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. It operates on 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 any-frequency synthesis with 0 ppm precision on four independent drivers
• Supports flexible input references: external crystals (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), and differential inputs (5-710 MHz)
• Independent output voltage selection per driver: 1.5 V, 1.8 V, 2.5 V, or 3.3 V
• 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 SRNS compliant systems
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards and MSAN/DSLAM/PON equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout assignments and factory programming configurations. Ensure the I2C pull-up voltage matches the system bus requirements, as register adjustments may be necessary for voltages below 2.5 V.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single package. Verify that the target output signal format (LVPECL, LVDS, HCSL, etc.) and frequency range fall within the specified limits for each driver. Confirm thermal management capabilities for the QFN-24 package under maximum load conditions.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. It replaces discrete crystal oscillators and frequency translators. The device integrates a PLL and four MultiSynth stages to provide high-performance clock synthesis in a compact 4x4 mm QFN package.

Replacement Considerations

Direct replacements must maintain the same pinout and electrical characteristics. Consult the manufacturer's cross-reference list for verified substitutes. Ensure alternative parts support the required output formats and jitter specifications.