SI5335B-B05678-GMR

Overview

The Skyworks SI5335B-B05678-GMR is a web-customizable, any-frequency, any-output quad clock generator and buffer. It utilizes MultiSynth technology to synthesize four non-integer-related frequencies up to 350 MHz with 0 ppm error. The device supports flexible input references including external crystals (25/27 MHz), CMOS (10–200 MHz), SSTL/HSTL, and differential inputs (10–350 MHz). Outputs are configurable as LVPECL, LVDS, CML, HCSL, CMOS, or SSTL/HSTL with independent voltage levels of 1.5, 1.8, 2.5, or 3.3 V. Key electrical parameters include a core supply current of 45 mA in PLL mode and 12 mA in buffer mode, operating on a single 1.8 V, 2.5 V, or 3.3 V supply.

Feature Summary

• MultiSynth fractional divider technology enables independent synthesis of four frequencies up to 350 MHz with 0 ppm frequency error.
• Configurable output drivers support up to four differential pairs or eight single-ended outputs with independent voltage selection (1.5V, 1.8V, 2.5V, 3.3V).
• Supports three independent, user-assignable, pin-selectable device configurations for system flexibility.
• Low phase jitter performance of 0.7 ps RMS typical value.

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

Procurement Notes

Verify the specific factory configuration encoded in the ordering suffix B05678 against the target design requirements using the ClockBuilder Pro utility. Confirm that the GMR suffix corresponds to the required tape-and-reel packaging format for the assembly line. Ensure the selected input reference source matches the device's supported input types.

Selection Notes

Select this component when a single device must replace multiple crystal oscillators or clock buffers. Verify that the required output frequencies do not exceed 350 MHz for differential formats or 200 MHz for CMOS. Check if the application requires the specific loop bandwidth settings (1.6 MHz or 475 kHz) for jitter attenuation or spread spectrum control.

Part Context

The SI5335 belongs to Skyworks' MultiSynth family of programmable clock generators. This series is designed to reduce bill-of-materials count by consolidating multiple fixed-frequency sources into one customizable IC. The device is manufactured in a 4 x 4 mm, 24-lead QFN package suitable for space-constrained designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.