SI5335D-B05874-GMR

Overview

The Skyworks SI5335D-B05874-GMR is a web-customizable, any-frequency, any-output quad clock generator and buffer. It synthesizes four non-integer-related frequencies up to 350 MHz using MultiSynth fractional divider technology, ensuring 0 ppm frequency synthesis error. The device supports three independent pin-selectable configurations and features flexible input references including external crystals (25/27 MHz), CMOS, SSTL/HSTL, and differential inputs. Outputs are configurable as LVPECL, LVDS, CML, HCSL, CMOS, or SSTL/HSTL with independent voltage levels of 1.5, 1.8, 2.5, or 3.3 V. It operates on a single core supply of 1.8, 2.5, or 3.3 V within a 4x4 mm 24-QFN package.

Feature Summary

• Four independent output banks supporting any frequency (< 350 MHz) with 0 ppm synthesis error
• Three user-assignable, pin-selectable device configurations for multi-function replacement
• Flexible input options: External crystal, CMOS, SSTL/HSTL, or differential signals
• Configurable output drivers with independent voltage selection (1.5V–3.3V)

Applications

• PCI Express Gen 1/2/3/4 common clock generation
• Ethernet switch and router timing
• Processor and FPGA clocking
• DSL jitter attenuation

Procurement Notes

Verify the specific factory configuration encoded in the B05874 suffix via the official datasheet or ClockBuilder Pro utility, as this determines the exact frequency plan and pin functions. Confirm RoHS compliance and moisture sensitivity level requirements for the assembly process. Check current distribution availability as custom parts may have restricted stock or longer lead times compared to standard inventory items.

Selection Notes

Select this component when a system requires multiple asynchronous clock frequencies from a single source without integer relationships. Ensure the required output formats (LVPECL, LVDS, etc.) and voltage levels match the load specifications. Verify that the input reference type (crystal vs. driven input) aligns with the board design. Use the ClockBuilder Pro tool to generate the correct configuration file for the B05874 variant.

Part Context

This part belongs to the Si5335 family of highly flexible clock generators. The 'D' suffix typically denotes a specific package or temperature range variant within the Skyworks portfolio, while 'GMR' indicates tape-and-reel packaging. It serves as a drop-in replacement for multiple discrete oscillators and buffers in complex digital systems requiring precise jitter performance.

Replacement Considerations

Direct replacements must be other Si5335 variants with compatible pinouts and electrical characteristics. Verify that the substitute part supports the same output frequencies and formats. Note that different ordering suffixes may require reconfiguration via ClockBuilder Pro even if the silicon is identical.