DSC557-04444KL1T

Overview

The DSC557-04444KL1T is a crystal-less, three-output PCI Express clock generator from the DSC557-04 series. It utilizes silicon MEMS technology to provide low-jitter differential outputs compliant with PCIe Gen1, Gen2, and Gen3 specifications. The device operates on a supply voltage of 2.25V to 3.6V and supports frequencies up to 460MHz. It features HCSL output formats for all three channels and includes independent output enable controls (OE1/OE2). Packaged in a 20-VFQFN exposed pad, it functions within an extended industrial temperature range of -40°C to 105°C.

Feature Summary

• Three differential outputs compliant with PCIe Gen1, Gen2, and Gen3 standards
• Silicon MEMS technology eliminates the need for external quartz crystals
• HCSL output format available for all three channels
• Independent Output Enable/Disable functionality via OE1 and OE2 pins

Applications

• Communications and Networking equipment including Ethernet and Routers
• Storage solutions such as SAN, NAS, SSD, and JBOD systems
• Embedded applications in Industrial, Medical, and Avionics sectors

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type, temperature grade, and output format compatibility. Ensure that the required frequency stability and jitter performance align with the system design requirements before procurement.

Selection Notes

Select this component for designs requiring multiple synchronized PCIe clocks without external resonators. Consider the 20-QFN footprint constraints and verify thermal management needs for the exposed pad. Confirm that the HCSL output swing meets the input requirements of the downstream PCIe receivers.

Part Context

This part belongs to the DSC557 family of MEMS-based clock generators designed to replace traditional quartz oscillators. The DSC557-04 variant specifically provides three outputs, offering a compact alternative to discrete oscillator solutions while maintaining high reliability and shock immunity suitable for demanding environments.

Replacement Considerations

Direct pin-to-pin replacements may include other variants within the DSC557-04 series with different temperature grades or output formats. Verify that any substitute maintains the same 20-QFN footprint and electrical characteristics.