SI5335B-B05727-GM

Overview

The SI5335B-B05727-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 technology, ensuring 0 ppm frequency synthesis error. The device features four output banks supporting differential pairs or single-ended outputs with configurable formats including LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V and supports independent output voltage levels. Key electrical parameters include a maximum output frequency of 350 MHz, a typical phase jitter of 0.7 ps RMS, and an operating temperature range of –40 °C to +85 °C.

Feature Summary

• Supports four independent output banks with configurable differential or single-ended signals up to 350 MHz.
• Utilizes MultiSynth fractional divider technology for 0 ppm frequency synthesis error across all configurations.
• Offers flexible input references including external crystals (25/27 MHz), CMOS, SSTL/HSTL, and differential inputs.
• Provides up to five user-assignable pin functions for spread spectrum control, reset, and frequency plan selection.

Applications

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

Procurement Notes

Verify the specific factory configuration encoded in the B05727 suffix against system requirements before procurement. Confirm that the QFN-24 package land pattern matches the PCB design guidelines provided in the datasheet. Ensure ESD protection measures are implemented during handling due to moisture sensitivity classification.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source with zero ppm error. Evaluate the output driver voltage requirements (1.5 V, 1.8 V, 2.5 V, or 3.3 V) to ensure compatibility with downstream receivers. Consider the loop bandwidth settings (1.6 MHz or 475 kHz) based on the jitter attenuation needs of the application.

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 series, while the alphanumeric suffix indicates a unique factory-programmed configuration file. It serves as a replacement for multiple discrete oscillators and buffers in complex digital systems.

Replacement Considerations

Direct pin-to-pin replacements may exist within the Si5335 family (e.g., other B-suffix variants) if the frequency plan matches. Verify that the replacement part has the identical configuration data programmed into its internal memory, as the physical pinout remains consistent across the QFN-24 package variants.