SI5338B-B08683-GMR

Overview

The SI5338B-B08683-GMR is a programmable quad clock generator from Skyworks Solutions, utilizing MultiSynth technology for independent frequency synthesis on four output drivers. It supports differential outputs up to 710 MHz and single-ended formats up to 350 MHz. The device operates with a 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 managed via an I2C/SMBus interface, allowing for precise frequency adjustments and spread spectrum generation.

Feature Summary

• I2C-programmable quad clock generator with independent any-frequency synthesis
• Differential outputs support LVPECL, LVDS, CML up to 710 MHz; single-ended up to 350 MHz
• Low phase jitter: 0.7 ps RMS typical (GbE/PCIe compliant)
• Flexible input reference: external crystal (8-30 MHz), CMOS, SSTL/HSTL, or differential (up to 710 MHz)

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4 common clock and SRNS
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific ordering suffix B08683 against the manufacturer's official documentation to confirm the exact pre-configured frequency plan and output format. Ensure compatibility with the target system's voltage levels and signal integrity requirements before procurement.

Selection Notes

Select this component when multiple independent clock frequencies are required from a single package. Verify that the desired output frequencies fall within the supported ranges for the chosen output format (LVDS/LVPECL vs. HCSL/CMOS). Confirm input source compatibility, as the device accepts various reference types including crystals and differential clocks.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. The 'B' in the model number typically denotes a specific factory-programmed configuration variant within the series, differing from generic programmable versions like the SI5338A or SI5338Q which may require user-defined programming for all parameters.

Replacement Considerations

Direct pin-to-pin replacements within the Si5338 family include SI5338A, SI5338B, SI5338C, SI5338J, and SI5338Q variants. When substituting, ensure the replacement part supports the required output frequencies and formats. Note that different suffixes may imply different factory-programmed settings rather than functional hardware differences.