SI5338E-B-GM

Overview

The Skyworks Solutions SI5338E-B-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 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. It is housed in a compact 4 x 4 mm QFN-24 package and programmed via an I²C/SMBus interface.

Feature Summary

• MultiSynth™ Technology: Generates four independent clocks with true zero ppm frequency accuracy.
• Flexible Input References: Supports external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).
• Configurable Outputs: Each driver supports LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats with independent voltage levels (1.5, 1.8, 2.5, or 3.3 V).
• Glitchless Frequency Adjustment: Independent increment/decrement feature allows 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
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix 'E' against the manufacturer's official documentation to confirm temperature range and performance grade. Confirm that the 'GM' suffix corresponds to the standard 24-QFN package without tape-and-reel variations unless specified. Cross-reference the part number with the latest datasheet revision to ensure compatibility with current design requirements.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single flexible source. Ensure the required output signal formats (LVDS, LVPECL, etc.) match the available configurable drivers. Verify that the input reference frequency falls within the supported ranges for the chosen input pin configuration. Check power supply constraints to ensure compatibility with the 1.8 V, 2.5 V, or 3.3 V core supply options.

Part Context

The SI5338E-B-GM belongs to the Si5338 family of I²C-programmable clock generators. This series is designed for high-performance applications requiring low jitter and flexible frequency synthesis. The device integrates a PLL and MultiSynth dividers to generate precise clock signals from various input references, offering a space-saving alternative to multiple crystal oscillators.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified source material. Consult the manufacturer's documentation for direct replacements or cross-reference similar models within the Si5338 family based on specific electrical and packaging requirements.