SI5338C-B04068-GM

Overview

The SI5338C-B04068-GM 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 V, 2.5 V, or 3.3 V and features low phase jitter of 0.7 ps RMS typical. Outputs are configurable for frequencies up to 710 MHz (LVPECL/LVDS) or 200 MHz (CMOS). Programming is performed via an I2C/SMBus interface.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis with zero ppm accuracy on four outputs.
• Supports flexible input references: external crystals (8-30 MHz), CMOS (5-200 MHz), SSTL/HSTL (5-350 MHz), and differential inputs (5-710 MHz).
• Highly-configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats.
• Features glitchless frequency adjustments in 1 ppm steps and independent phase adjustment with <20 ps accuracy.

Applications

• PCIe Gen 1/2/3/4 Common Clock and Gen 3 SRNS compliant systems.
• Ethernet switch/router and 1 GbE/10 GbE timing.
• Processor and FPGA clocking solutions.
• Broadcast video/audio timing applications.

Procurement Notes

Verify the specific factory programming code associated with the B04068 suffix against the datasheet's ordering information table. Confirm that the required output frequencies and signal formats match the pre-programmed configuration, as this variant is factory-set rather than user-programmable from scratch.

Selection Notes

Select this component when a fixed, pre-programmed quad clock solution is required for high-speed interfaces like PCIe or Ethernet. Ensure the target application utilizes the specific frequencies and output formats defined by the B04068 factory code. Verify compatibility with the system's reference clock input type and voltage levels.

Part Context

This part belongs to the Si5338 family of I2C-programmable clock generators. While the base architecture allows for extensive customization, the 'B' series indicates a specific factory-programmed variant designed for targeted applications such as telecom line cards or specific processor clocking requirements without requiring end-user programming.

Replacement Considerations

Direct replacement requires matching the factory-programmed output frequencies and formats. Other Si5338 variants (e.g., SI5338Q, SI5338A) offer different performance characteristics or user-programmability but may not provide the identical electrical output configuration without reprogramming.