DSC557-04333KI1T

Overview

The DSC557-04333KI1T is a crystal-less, three-output PCI Express clock generator utilizing silicon MEMS technology. It provides three LVDS outputs at 100 MHz with a frequency stability of ±100 ppm. The device operates within a supply voltage range of 2.25 V to 3.6 V and supports an industrial temperature range of -40°C to 85°C. Packaged in a 20-VFQFN (5x3.2 mm) exposed pad, it meets PCIe Gen1, Gen2, and Gen3 specifications without requiring an external quartz crystal.

Feature Summary

• Crystal-less design using proven silicon MEMS technology for enhanced reliability
• Three differential LVDS outputs compliant with PCIe Gen1, Gen2, and Gen3 standards
• Integrated Output Enable/Disable control via OE1 and OE2 pins
• Low power consumption, approximately 30% lower than competing devices

Applications

• Communications and Networking: Ethernet, Routers, Switches, Gateways
• Storage Systems: SAN, NAS, SSD, JBOD
• Embedded Applications: Industrial, Medical, Avionics, Security Systems

Procurement Notes

Verify the ordering suffix KI1T corresponds to the specific package, temperature grade (-40°C to 85°C), output format (LVDS), and packing method (Tape & Reel). Confirm that the ±100 ppm stability rating aligns with system requirements. Ensure compatibility with the 20-VFQFN footprint during procurement planning.

Selection Notes

Select this component when a crystal-less PCIe clock source with three identical LVDS outputs is required. The DSC557-04 series eliminates the need for external crystals, reducing BOM complexity. Verify that the 100 MHz frequency and ±100 ppm stability meet the target interface specifications. Consider the 20-QFN package dimensions for PCB layout constraints.

Part Context

The DSC557-04 belongs to the DSC557 family of PCIe clock generators designed to replace quartz oscillators. This specific part number denotes the variant with three LVDS outputs, industrial temperature range, and tape-and-reel packaging. It is engineered for high shock and vibration immunity, qualified to MIL-STD-883 standards.

Replacement Considerations

Direct replacements include other DSC557-04 variants with different output formats (HCSL, LVPECL) or stability ratings. Cross-model substitution requires verifying pinout compatibility and electrical parameters against the original design specifications.