SI5335D-B05998-GMR

Overview

The SI5335D-B05998-GMR is a web-customizable, any-frequency, any-output quad clock generator and buffer from Skyworks Solutions. It synthesizes four non-integer-related frequencies up to 350 MHz using MultiSynth technology, ensuring 0 ppm frequency synthesis error. The device supports flexible input references including external crystals (25/27 MHz), CMOS, SSTL/HSTL, and differential inputs. Outputs are independently configurable for LVPECL, LVDS, CML, HCSL, CMOS, or SSTL/HSTL formats with selectable supply voltages of 1.5, 1.8, 2.5, or 3.3 V. It features low phase jitter of 0.7 ps RMS, two selectable PLL loop bandwidths (1.6 MHz or 475 kHz), and operates on a single core supply of 1.8, 2.5, or 3.3 V within a –40 to +85 °C temperature range.

Feature Summary

• Synthesizes four independent, non-integer-related output frequencies up to 350 MHz with 0 ppm frequency error
• Supports multiple input types: external crystal, CMOS, SSTL/HSTL, and differential signals
• Configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, and SSTL/HSTL formats
• Features low phase jitter (0.7 ps RMS typical) and selectable PLL loop bandwidths (1.6 MHz or 475 kHz)

Applications

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

Procurement Notes

Verify the specific factory configuration encoded in the ordering suffix B05998 against system requirements. Confirm that the GMR suffix indicates tape-and-reel packaging if automated assembly is required. Ensure compatibility with the ClockBuilder Pro utility for final validation of the customized pinout and frequency plan.

Selection Notes

Select this component when four distinct, non-harmonically related clock frequencies are needed from a single device. Choose between the D-series (reference input) or A/B series based on whether an external reference signal or crystal oscillator is preferred. Verify that the required output voltage levels (1.5V to 3.3V) and drive strengths match the load specifications of the destination devices.

Part Context

This part belongs to the Si5335 family of highly flexible clock generators. The 'D' variant specifically denotes support for external reference inputs rather than internal oscillators found in other variants. The unique suffix defines the pre-programmed frequency plan and pin configuration, eliminating the need for external configuration resistors or I2C interfaces in standard deployments.

Replacement Considerations

Direct replacements require identical frequency plans and pin configurations. Generic Si5335 variants may differ in input type or output capabilities. Verify that any substitute maintains the same package footprint (24-QFN) and electrical characteristics, particularly jitter performance and supply voltage ranges.