SI5335D-B05861-GM

Overview

The Skyworks SI5335D-B05861-GM is a web-customizable, any-frequency, any-output quad clock generator and buffer. 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.
• Low phase jitter performance: typical 0.7 ps RMS in clock generator mode.
• Flexible input options: external crystal, CMOS, SSTL/HSTL, or differential signals.

Applications

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

Procurement Notes

Verify the specific configuration encoded in the ordering suffix B05861 via the Skyworks ClockBuilder Pro utility or official datasheet, as this part number represents a factory-customized variant. Confirm package type is 24-QFN and operating temperature range is -40 to +85 °C. Check current availability status with distributors as customized parts may have limited stock or longer lead times.

Selection Notes

Select this component when a system requires four distinct clock frequencies derived from a single reference without integer multiples. Ensure the required output voltage levels (1.5V, 1.8V, 2.5V, or 3.3V) match the load requirements. Verify that the input signal format (crystal, CMOS, or differential) aligns with the system's reference source. Use the ClockBuilder tool to generate the specific configuration file for the B05861 suffix.

Part Context

The SI5335D-B05861-GM belongs to the Si5335 family of highly flexible clock generators. The 'D' suffix typically denotes a specific package or temperature grade variation within the Si5335 line, while 'GM' indicates tape and reel packaging. This specific model is a pre-configured version available through Skyworks' web customization service, eliminating the need for users to program the device themselves.

Replacement Considerations

Direct replacements must be other Si5335 variants with identical output frequency plans and voltage levels. Generic clock generators cannot replace this part due to the unique MultiSynth configuration. Verify that substitute parts support the same input reference types and output drive strengths.