SI5335B-B05739-GM

Overview

The Skyworks SI5335B-B05739-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 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. Outputs are independently configurable for LVPECL, LVDS, CML, HCSL, CMOS, SSTL, or HSTL formats with selectable supply voltages of 1.5, 1.8, 2.5, or 3.3 V. It features low phase jitter of 0.7 ps RMS, two selectable PLL loop bandwidths (1.6 MHz or 475 kHz), and loss-of-signal alarm functionality.

Feature Summary

• Four independent output banks supporting any frequency up to 350 MHz with 0 ppm synthesis error
• Configurable as clock generator or buffer with three pin-selectable device configurations
• Low phase jitter of 0.7 ps RMS and dual selectable PLL loop bandwidths (1.6 MHz/475 kHz)
• Flexible input options: crystal, CMOS, SSTL/HSTL, or differential; outputs support multiple voltage levels

Applications

• PCI Express Gen 1/2/3/4 common clock and jitter attenuation
• Ethernet switch/router and 1 GbE/10 GbE timing
• DSL jitter attenuation and telecom line cards
• Broadcast video/audio timing and processor/FPGA clocking

Procurement Notes

Verify the specific factory configuration encoded in the ordering suffix B05739 against system requirements. Confirm that the 24-QFN package dimensions and thermal characteristics align with the PCB land pattern design. Ensure the selected output driver voltages match the target receiver specifications.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source. Choose between 1.6 MHz and 475 kHz loop bandwidth based on whether jitter attenuation or fast lock time is prioritized. Verify that the input reference signal type (crystal vs. driven) matches the available system clock infrastructure.

Part Context

This part belongs to the Si5335 family of highly flexible clock generators. The 'B' indicates a specific silicon revision or feature set within the series. The 'GM' suffix denotes the 24-lead QFN package variant. The numeric code defines the unique register map and pin control settings programmed at the factory.

Replacement Considerations

Direct replacements require identical factory programming. Generic Si5335 devices must be reconfigured via ClockBuilder Pro. Verify pin compatibility and electrical parameters such as supply voltage ranges and output drive strengths before substitution.