DSC557-0333SL1T

Overview

The DSC557-0333SL1T is a two-output PCI Express clock generator from the DSC557-03 series, manufactured by Microchip Technology. It utilizes silicon MEMS technology to generate a 100 MHz differential LVDS output clock without requiring an external crystal. The device complies with PCIe Gen1/2/3/4 common clock specifications and features an integrated PLL. It operates within a supply voltage range of 2.25V to 3.6V and supports an extended industrial temperature range of -40°C to +105°C. The component is housed in a 16-TSSOP surface-mount package.

Feature Summary

• Two-output PCIe clock generator compliant with Gen1, Gen2, Gen3, and Gen4 specifications
• Integrated MEMS resonator eliminates the need for an external 25 MHz crystal
• LVDS output format with excellent jitter performance (e.g., 0.313 ps RMS for PCIe Gen 3.0)
• Output Enable/Disable feature allows disabling outputs when OE pin is low

Applications

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

Procurement Notes

Verify the package type against official documentation, as the DSC557-03 series is primarily available in a 14-Lead QFN package. Confirm that the specific ordering suffix corresponds to the required temperature grade and output configuration before procurement.

Selection Notes

Select this model for applications requiring dual differential LVDS outputs at 100 MHz. Ensure the design accommodates the 2.25V to 3.6V supply range and verify compatibility with the target PCIe generation's jitter requirements.

Part Context

This part belongs to the DSC557-03 family of two-output PCIe clock generators. It replaces traditional quartz oscillators, offering improved reliability and shock/vibration immunity while maintaining low power consumption compared to competing devices.

Replacement Considerations

Direct replacement parts include other variants within the DSC557-03 series, such as those with HCSL or LVCMOS outputs, provided the package and electrical characteristics match the system requirements.