SI5338C-B10646-GMR

Overview

The SI5338C-B10646-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology to synthesize any frequency on four independent output drivers. It supports differential and single-ended formats including LVPECL, LVDS, HCSL, CMOS, SSTL, and HSTL. The device operates with a core supply of 1.8, 2.5, or 3.3 V and accepts inputs up to 710 MHz. Key electrical parameters include a typical RMS jitter of 0.7 ps, a maximum output frequency of 710 MHz for differential outputs, and an operating temperature range of -40°C to +85°C.

Feature Summary

• MultiSynth technology enables zero ppm precision and glitchless frequency adjustments in 1 ppm steps.
• Supports PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliance.
• Flexible input reference options: external crystal (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), or differential (5-710 MHz).
• Configurable spread spectrum (SSC) on any output with frequencies from 5 to 350 MHz.

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4 systems
• Processor and FPGA clocking
• Telecom line cards
• Fibre Channel and SAN

Procurement Notes

Verify the specific factory configuration encoded in the B10646 suffix against the target design requirements using the official datasheet. Confirm that the I2C/SMBus interface voltage levels match the system bus specifications. Ensure proper decoupling capacitors are placed near the VDD and VDDO pins as recommended in the application circuits section of the documentation.

Selection Notes

Select this component when independent frequency synthesis across four outputs is required without external oscillators. Consider the output driver format compatibility (LVPECL, LVDS, etc.) and the specific supply voltage needs for each output bank. Verify that the input reference source matches one of the supported types, such as differential clocks up to 710 MHz or single-ended CMOS signals.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'C' indicates the commercial temperature grade (-40°C to +85°C), while the 'B10646' suffix denotes a specific pre-configured frequency plan and output settings programmed into the internal NVM. The 'GMR' suffix indicates tape and reel packaging.

Replacement Considerations

Direct pin-to-pin replacements within the same package must be selected from the Si5338 family. Verify that alternative part numbers support the required output formats and frequencies. Note that ordering suffixes define the factory programming; generic Si5338 devices require custom configuration via ClockBuilder Pro software.