SI5338B-B-GMR

Overview

The SI5338B-B-GMR is a programmable quad clock generator utilizing MultiSynth technology for independent frequency synthesis on four output drivers. It supports any frequency up to 710 MHz with zero ppm precision and features low phase jitter of 0.7 ps RMS typical. The device accepts differential inputs up to 710 MHz, single-ended CMOS up to 200 MHz, or external crystals from 8 to 30 MHz. Outputs are configurable to LVPECL, LVDS, CML, HCSL, CMOS, SSTL, or HSTL formats with independent supply voltages of 1.5, 1.8, 2.5, or 3.3 V per driver. It operates on a single core supply (1.8, 2.5, or 3.3 V) within a 4x4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four outputs with 0 ppm accuracy
• Low phase jitter performance of 0.7 ps RMS typical
• Flexible input support including differential (up to 710 MHz), CMOS (up to 200 MHz), and crystal (8-30 MHz)
• Configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant timing
• Ethernet switch and router clocking
• Processor and FPGA clock generation
• Broadcast video and audio timing systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout compatibility and factory configuration. Ensure the I2C pull-up voltage requirements match the system bus levels, particularly if operating below 2.5 V. Confirm moisture sensitivity handling procedures prior to assembly.

Selection Notes

Select this component when independent frequency synthesis across multiple outputs is required without cross-coupling constraints. Verify that the target output signal format (LVPECL, LVDS, etc.) and voltage levels are supported by the specific output driver configuration. Ensure the input reference source matches the supported frequency ranges for differential or single-ended inputs.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'B' designation typically indicates a specific factory configuration or pinout variant within the series. The '-GMR' suffix denotes tape and reel packaging for surface-mount assembly. Other variants in the family may differ in maximum frequency capabilities or output configurations.

Replacement Considerations

Direct replacements must be verified against the official Skyworks Solutions substitution guide. Cross-model comparisons should account for differences in maximum output frequency, jitter specifications, and available output formats. Pin-to-pin compatibility requires confirmation of identical package dimensions and electrical characteristics.