SI5338H-B04836-GMR

Overview

The SI5338H-B04836-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. The device accepts inputs up to 710 MHz and generates outputs with 0 ppm precision. Key electrical parameters include a core supply voltage range of 1.71 V to 3.63 V, a typical operating current of 45 mA, and a maximum input frequency of 710 MHz. It features low phase jitter of 0.7 ps RMS typ and operates within a temperature range of –40 °C to +85 °C in a 24-lead QFN package.

Feature Summary

• I2C-programmable synthesis with 0 ppm frequency accuracy across four independent outputs
• Supports flexible input references: external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential (5–710 MHz)
• Configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats
• Glitchless frequency adjustment via independent increment/decrement feature and spread spectrum capability

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant systems
• Ethernet switch and router timing
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards and MSAN/DSLAM/PON applications

Procurement Notes

Verify the specific ordering suffix B04836 against the manufacturer's official documentation to confirm the exact pre-configured frequency plan and pinout assignment. Ensure compatibility with I2C/SMBus interface requirements for system integration. Confirm that the selected output voltage levels match the target load specifications.

Selection Notes

Select this component when zero ppm frequency accuracy and low jitter are required for multiple asynchronous clocks. Evaluate the available output driver formats (LVPECL, LVDS, etc.) against the destination device requirements. Consider the input reference type (crystal vs. external clock) and verify that the desired output frequencies fall within the supported ranges for the chosen driver format.

Part Context

This part belongs to the Si5338 family of high-performance, low-jitter clock generators. The family utilizes patented MultiSynth technology to replace multiple discrete oscillators. Variations within the series differ primarily by pre-programmed frequency plans, output driver configurations, and specific application optimizations such as PCIe compliance or Ethernet synchronization.

Replacement Considerations

Direct replacements must be sought from the Si5338 family with matching output count and frequency capabilities. Verify that alternative part numbers support the same I2C programming interface and physical QFN-24 footprint. Check datasheets for equivalent jitter performance and input/output voltage compatibility.