SI5335B-B04863-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5335B-B04863-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 fractional divider 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. It features independently configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, and SSTL/HSTL formats with selectable supply voltages of 1.5, 1.8, 2.5, or 3.3 V. The core operates on a single supply of 1.8, 2.5, or 3.3 V, consuming 45 mA in PLL mode and 12 mA in buffer mode. It is housed in a 4x4 mm, 24-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Four independent outputs capable of synthesizing any frequency up to 350 MHz with 0 ppm error.
• Supports three independent, pin-selectable device configurations for system flexibility.
• Low phase jitter performance of 0.7 ps RMS typical.
• Flexible input options: External crystal, CMOS (10-200 MHz), SSTL/HSTL, and Differential (10-350 MHz).

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 configuration parameters encoded in the B04863 suffix against the design requirements, as this part is factory-programmed. Confirm availability through authorized distributors, as lead times may vary for customized units. Ensure ESD precautions are taken during handling due to the moisture sensitivity level indicated for the QFN package.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source with low jitter. Verify that the desired output voltage levels (1.5V, 1.8V, 2.5V, 3.3V) match the load requirements. Use the ClockBuilder Pro utility to define the specific frequency plan and control pin assignments before ordering, as the device is customized at the factory.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si5335 family of highly flexible clock generators. The 'B' variant typically denotes specific performance or feature sets within the family, while the alphanumeric suffix indicates the unique factory configuration. It serves as a replacement for multiple discrete oscillators and buffers in complex digital systems.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct pin-to-pin replacements within the same family require identical configuration files. Other Skyworks Si53xx series devices may offer similar functionality but differ in output count, frequency range, or package size. Verify electrical compatibility and software tool support for any alternative components.