SI5338N-B05878-GM

Overview

The SI5338N-B05878-GM is a programmable quad clock generator from Skyworks Solutions. It synthesizes four independent output clocks with zero ppm frequency accuracy using MultiSynth technology. The device supports differential and single-ended outputs, including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL formats. It operates on a single core supply of 1.8 V, 2.5 V, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Configuration is performed via an I2C/SMBus interface.

Feature Summary

• MultiSynth technology enables any-frequency synthesis with 0 ppm precision on four independent drivers
• Flexible input reference options: external crystal (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), or differential (5-710 MHz)
• Independent output voltage support per driver at 1.5, 1.8, 2.5, or 3.3 V
• Glitchless frequency adjustment in 1 ppm steps and independent phase adjustment with <20 ps resolution

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4
• Broadcast video/audio timing
• Processor and FPGA clocking
• MSAN/DSLAM/PON

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout configuration and factory programming settings. Ensure the I2C pull-up voltage matches the system bus requirements, as register adjustments may be necessary for voltages below 2.5 V.

Selection Notes

Select this component when multiple distinct clock frequencies are required from a single package. Verify that the target output signal format (LVPECL, LVDS, etc.) and frequency range fall within the specified limits for each driver. Confirm that the available input reference source matches one of the supported input types.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The series utilizes patented MultiSynth architecture to replace multiple discrete oscillators. The device is housed in a compact 4 x 4 mm 24-lead QFN package suitable for space-constrained designs.

Replacement Considerations

Consult the official datasheet for cross-reference information. Direct replacements must match the 24-QFN package and support the required number of outputs and signal formats.