SI5335B-B04645-GMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5335B-B04645-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 200 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 outputs supporting LVPECL, LVDS, CML, HCSL, CMOS, and SSTL/HSTL formats with individual voltage supplies of 1.5, 1.8, 2.5, or 3.3 V. Key electrical parameters include a core supply voltage range of 1.71–3.63 V, a typical core supply current of 45 mA in PLL mode, and an operating temperature range of –40 to +85 °C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Four independent output banks capable of synthesizing any frequency up to 200 MHz with 0 ppm error.
• Supports three independent, pin-selectable device configurations for replacing multiple clock ICs.
• Low phase jitter performance of 0.7 ps RMS with selectable PLL loop bandwidths of 1.6 MHz or 475 kHz.
• Flexible input options including external crystal, CMOS, SSTL/HSTL, and differential signals.

Clock Generators, PLLs, Frequency Synthesizers Applications

• PCI Express Gen 1/2/3/4 common clock and jitter attenuation
• Ethernet switch/router and 1 GbE/10 GbE timing
• Processor and FPGA clocking
• DSL jitter attenuation

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory configuration encoded in the B04645 suffix via the official Skyworks datasheet or ClockBuilder Pro utility. Confirm that the required output frequencies, formats, and control pin assignments match the system design requirements before procurement, as this is a customized part number.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when four distinct clock frequencies below 200 MHz are required with low jitter and flexible output drive strengths. Ensure the input reference source matches one of the supported types: 25/27 MHz crystal, CMOS, SSTL/HSTL, or differential. Verify that the power supply constraints align with the single core supply (1.8/2.5/3.3 V) and independent output driver supplies.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5335 family of highly flexible clock generators. The 'B' variant specifically denotes support for output frequencies up to 200 MHz, distinguishing it from other variants like the Si5335A which supports up to 350 MHz. The '-GMR' suffix indicates the tape-and-reel packaging format.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Replacement requires matching the exact frequency plan and pin configuration generated by Skyworks ClockBuilder Pro.