SI5335D-B04566-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5335D-B04566-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 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 operates on a single core supply (1.8, 2.5, or 3.3 V) within an ambient temperature range of –40 to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Four-output clock generator/buffer with 0 ppm frequency synthesis error via MultiSynth technology
• Supports three independent, user-assignable, pin-selectable device configurations
• Flexible input options: External crystal, CMOS, SSTL/HSTL, or differential signals
• Individually configurable output drivers supporting multiple voltage levels and formats

Clock Generators, PLLs, Frequency Synthesizers Applications

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

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory configuration encoded in the B04566 suffix against system requirements, as this part number represents a customized frequency plan rather than a generic blank device. Confirm that the required pin-selectable control functions (such as spread spectrum enable or frequency plan selection) are mapped to the available user pins in the delivered configuration. Ensure the ordering documentation matches the intended output formats and supply voltages.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a design requires four distinct clock frequencies derived from a single reference without integer multiples. Verify that the target output frequencies fall within the supported ranges for the chosen driver format (e.g., up to 350 MHz for LVDS/LVPECL/CML/SSTL/HSTL, up to 250 MHz for HCSL, and up to 200 MHz for CMOS). Check if the application benefits from the two selectable PLL loop bandwidths (1.6 MHz or 475 kHz) for jitter attenuation or if a buffer mode bypass is sufficient.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5335 family of highly flexible clock generators. Unlike fixed-frequency oscillators, the Si5335 allows for complete customization of output frequencies and formats through Skyworks' ClockBuilder Pro utility. The 'D' in the model number typically denotes specific internal configuration parameters defined during manufacturing, distinguishing it from other variants like the Si5335A or Si5335B which may have different standard specifications or feature sets.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacement requires matching the custom frequency plan. Generic Si5335 devices must be reconfigured via ClockBuilder Pro to match the SI5335D-B04566-GM's specific outputs. Verify pin compatibility, as control pin assignments (SSENB, RESET, FS1, FS0) may differ between custom configurations. Ensure the replacement package (24-QFN) and thermal characteristics are identical.