SI5335D-B06991-GM

Overview

The SI5335D-B06991-GM is a web-customizable, any-frequency, any-output quad clock generator and buffer manufactured by Skyworks Solutions. 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 (1.8, 2.5, or 3.3 V) within an ambient temperature range of –40 to +85 °C.

Feature Summary

• Four output banks supporting any frequency up to 350 MHz with 0 ppm synthesis error
• Three independent, user-assignable, pin-selectable device configurations
• Flexible input reference options: external crystal, CMOS, SSTL/HSTL, or differential
• Configurable output drivers with independent voltage levels (1.5, 1.8, 2.5, 3.3 V)

Applications

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

Procurement Notes

Verify the specific factory configuration programmed into the device via the ClockBuilder Pro utility, as this part number represents a customized variant rather than a generic off-the-shelf component. Confirm that the pin-selectable control functions (SSENB, RESET, OEB, FS1, FS0) match the system design requirements for mode switching and spread spectrum control.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single package with zero ppm error. Ensure the input source matches one of the supported formats (crystal, CMOS, SSTL/HSTL, or differential). Verify that the required output voltage levels and drive strengths are compatible with the load capacitance and receiver specifications of the target devices.

Part Context

This part belongs to the Si5335 family of highly flexible clock generators. The 'D' suffix typically denotes specific performance or feature sets within the family, while the alphanumeric code 'B06991' indicates the unique factory programming configuration generated through Skyworks' customization tools. It replaces multiple discrete oscillators and buffers in complex digital systems.

Replacement Considerations

Direct replacement requires matching the exact frequency plan and pin configuration. Generic Si5335 variants may not have the same programmed outputs. Verify compatibility with the host system's control pin logic levels and ensure the thermal characteristics of the 24-QFN package are suitable for the application environment.