SI5338K-B-GM

Overview

The SI5338K-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 including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. The device operates from a 1.8 V, 2.5 V, or 3.3 V core supply with a typical current of 45 mA. Input references include external crystals (8–30 MHz), CMOS (up to 200 MHz), and differential signals (up to 710 MHz). Outputs support frequencies up to 710 MHz for LVPECL/LVDS/CML and 350 MHz for SSTL/HSTL. It features low phase jitter of 0.7 ps RMS typ.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with zero ppm accuracy.
• Supports flexible input references: external crystal (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), and differential (5-710 MHz).
• Highly configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats.
• Low phase jitter of 0.7 ps RMS typical; compliant with PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS.

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4
• Broadcast video/audio timing
• Processor and FPGA clocking
• MSAN/DSLAM/PON

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm factory programming, package type, and shipping configuration. The base model designation indicates the functional family, but final part identification requires checking the complete part number string in the latest datasheet ordering section.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single programmable source. Ensure the required output voltage levels (1.5, 1.8, 2.5, or 3.3 V) match the load requirements. Verify that the input reference frequency falls within the supported ranges for the chosen input pin configuration.

Part Context

This device belongs to the Si5338 family of I2C-programmable clock generators. It is designed to replace up to four different frequency crystal oscillators or operate as a frequency translator. The series is characterized by low power consumption and a small 4x4 mm QFN package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.