SI5335B-B05739-GMR

Overview

The SI5335B-B05739-GMR is a web-customizable, any-frequency, any-output quad clock generator and buffer manufactured by Skyworks Solutions. It utilizes MultiSynth technology to synthesize four independent, non-integer-related frequencies up to 350 MHz with 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 highly configurable, supporting LVPECL, LVDS, CML, HCSL, CMOS, and SSTL/HSTL formats across individual driver voltages of 1.5, 1.8, 2.5, or 3.3 V. It features low phase jitter of 0.7 ps RMS typ, two selectable PLL loop bandwidths (1.6 MHz or 475 kHz), and up to five user-assignable pin functions for system control.

Feature Summary

• MultiSynth technology enables independent synthesis of four frequencies up to 350 MHz with guaranteed 0 ppm accuracy.
• Configurable as a clock generator or buffer with support for three independent, pin-selectable device configurations.
• Flexible output drivers support up to four differential pairs or eight single-ended outputs in various logic families (LVPECL, LVDS, CML, HCSL, CMOS, SSTL/HSTL).
• Low phase jitter performance of 0.7 ps RMS typical, with selectable PLL loop bandwidths of 1.6 MHz or 475 kHz.

Applications

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

Procurement Notes

Verify the specific factory configuration encoded in the ordering suffix B05739 against the target design requirements using the ClockBuilder Pro utility. Confirm that the 24-QFN package dimensions and thermal pad grounding meet PCB layout specifications. Ensure supply voltage levels (1.8V, 2.5V, or 3.3V) align with the core and output buffer supply constraints defined in the electrical characteristics.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single source with zero ppm error. Choose between the 1.6 MHz or 475 kHz loop bandwidth based on whether jitter attenuation or fast lock time is prioritized. Ensure the input reference type (crystal, CMOS, or differential) matches the available system clock source. Verify that the required output voltage levels (1.5V, 1.8V, 2.5V, or 3.3V) are supported by the load devices.

Part Context

The SI5335 belongs to Skyworks' MultiSynth family of programmable clock generators. Unlike fixed-frequency oscillators, this device allows for complete customization of output frequencies and formats via a web-based tool. The 'GMR' suffix indicates tape and reel packaging, suitable for automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.