SI5338C-B10646-GM

Overview

The SI5338C-B10646-GM is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports core supply voltages of 1.8 V, 2.5 V, or 3.3 V and operates within an ambient temperature range of –40 °C to +85 °C. The device features low phase jitter of 0.7 ps RMS typical, with flexible input references including external crystals (8–30 MHz), CMOS (up to 200 MHz), SSTL/HSTL (up to 350 MHz), and differential inputs (up to 710 MHz). Outputs support LVPECL, LVDS, HCSL, CMOS, and SSTL/HSTL formats.

Feature Summary

• MultiSynth™ technology enables independent, any-frequency synthesis on four differential output drivers with 0 ppm precision.
• Low phase jitter performance of 0.7 ps RMS typical across all outputs.
• Flexible input reference options: external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential (5–710 MHz).
• Independent output voltage configuration per driver at 1.5, 1.8, 2.5, or 3.3 V.

Applications

• PCIe Gen 1/2/3/4 common clock and SRNS compliant timing
• Ethernet switch/router clocking
• Processor and FPGA clock generation
• Broadcast video/audio timing systems

Procurement Notes

Verify the specific ordering suffix B10646 against the manufacturer's official documentation to confirm the programmed frequency plan and output configuration. Ensure I2C/SMBus interface compatibility with the host controller. Confirm that the 24-QFN package land pattern matches the recommended PCB layout specifications provided in the datasheet.

Selection Notes

Select this component when replacing multiple discrete oscillators with a single programmable source. Ensure the required output signal formats (LVPECL, LVDS, etc.) and frequencies fall within the specified ranges. Verify that the system power budget accommodates the typical 45 mA core supply current and individual output buffer currents.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'C' indicates commercial temperature grade (-40°C to +85°C), while 'GMR' denotes tape and reel packaging. The 'B10646' suffix specifies the factory-programmed frequency plan and pinout configuration.

Replacement Considerations

Direct replacements must match the 24-QFN footprint and electrical characteristics. Verify that alternative parts support the same MultiSynth architecture for glitchless frequency adjustments if dynamic tuning is required in the application.