SI5335D-B04333-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Si5335D-B04333-GM 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 features four output banks, each supporting one differential pair or two single-ended outputs. It supports three independent, pin-selectable configurations and includes up to five user-assignable control pins for spread spectrum, enable, and reset functions. Operating on a single supply of 1.8 V, 2.5 V, or 3.3 V, it delivers low phase jitter of 0.7 ps RMS and operates within a temperature range of –40 to +85 °C in a 4x4 mm, 24-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Synthesizes four independent, non-integer-related frequencies up to 350 MHz with 0 ppm error via MultiSynth technology
• Supports three independent, pin-selectable device configurations to replace multiple clock ICs
• Flexible input options including external crystals (25/27 MHz), CMOS, SSTL/HSTL, and differential inputs
• Configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, and SSTL/HSTL formats

Clock Generators, PLLs, Frequency Synthesizers Applications

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

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific configuration code B04333 against the ClockBuilder Pro database to ensure the factory-programmed register settings match the required frequency plan and pin assignments. Confirm that the GM suffix corresponds to the standard RoHS-compliant lead-free finish and tape-and-reel packaging format as defined in the official ordering guide. Cross-reference the top marking with the datasheet to validate authenticity upon receipt.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a system requires four distinct clock frequencies derived from a single reference source without integer relationships. Ensure the input reference frequency falls within the supported ranges: 25/27 MHz for crystals, 10–200 MHz for CMOS, or 10–350 MHz for differential/SSTL/HSTL inputs. Verify that the required output voltage levels (1.5, 1.8, 2.5, or 3.3 V) are compatible with the target receivers and that the loop bandwidth selection (1.6 MHz or 475 kHz) meets the jitter attenuation requirements of the application.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The Si5335D-B04333-GM belongs to the Si5335 family of web-customizable clock generators. Unlike fixed-function oscillators, this device allows users to define unique frequency plans through Skyworks' ClockBuilder Pro utility. The 'D' indicates the commercial temperature grade variant, while 'GM' denotes the green, lead-free package option. This flexibility reduces bill-of-materials count by consolidating multiple discrete clock sources into a single programmable component.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided documentation. When replacing legacy clock generators, verify that the new device's pinout compatibility matches the existing PCB layout or design an adapter if pin assignments differ. Ensure the replacement supports the same output drive strengths and voltage levels required by the downstream components.