SI5335D-B05818-GMR

Overview

The SI5335D-B05818-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 outputs 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 (1.8, 2.5, or 3.3 V) with low power consumption.

Feature Summary

• Four independent output banks capable of generating any frequency up to 350 MHz with 0 ppm synthesis error.
• Supports three independent, pin-selectable device configurations for replacing multiple clock ICs.
• Flexible input options: External crystal, CMOS (10–200 MHz), SSTL/HSTL, and Differential (10–350 MHz).
• Configurable output drivers with independent voltage selection (1.5, 1.8, 2.5, 3.3 V) and formats (LVPECL/LVDS/CML/HCSL/CMOS/SSTL/HSTL).

Applications

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

Procurement Notes

Verify the specific factory configuration encoded in the B05818 suffix via the Skyworks ClockBuilder Pro utility or official datasheet ordering information. Confirm package type (24-QFN) and operating temperature range (-40 to +85 °C) match system requirements. Check current availability status as customized parts may have limited stock or specific lead times.

Selection Notes

Select this part when a single device must replace multiple fixed-frequency oscillators or buffers. Ensure the required output frequencies are within the 350 MHz limit. Verify that the input reference source matches one of the supported types (Crystal, CMOS, Differential). Use the ClockBuilder tool to generate the specific configuration file for the B05818 variant before procurement.

Part Context

This component belongs to the Si5335 family of highly flexible clock generators. The 'D' suffix typically denotes a specific configuration or revision within the customizable product line. The '-GMR' suffix indicates a tape-and-reel packaging option, distinct from the tray-packaged '-GM' version, facilitating automated surface-mount assembly.

Replacement Considerations

Direct pin-to-pin replacements depend entirely on the specific frequency plan and output format configured in the B05818 variant. Generic Si5335 family members (e.g., SI5335A, SI5335B) may serve as functional equivalents if their default or reconfigurable settings match the design requirements. Verify electrical compatibility and software configurability.