DSC557-0334FE0

Overview

The DSC557-0334FE0 is a two-output PCI Express clock generator from Microchip Technology, utilizing silicon MEMS technology to eliminate the need for an external 25 MHz crystal. It provides a 100 MHz differential output with HCSL and LVDS formats. The device operates within a supply voltage range of 2.25V to 3.6V and supports PCIe Gen1 through Gen4 common clock specifications. Packaged in a compact 14-VFQFN (2.5x3.2 mm) case, it functions at temperatures between -20°C and +70°C.

Feature Summary

• Complies with PCIe Gen1/2/3/4 Common Clock Specifications
• Integrated MEMS Resonator eliminates external quartz crystal requirements
• Dual Output: 100 MHz HCSL and LVDS formats available
• Space-saving 14-Lead QFN Package (2.5 mm x 3.2 mm)

Applications

• Communications and Networking (Ethernet, Routers, Switches)
• Storage Systems (SAN, NAS, SSD)
• Embedded Applications (Industrial, Medical, Avionics)

Procurement Notes

Verify the specific ordering suffix against the manufacturer's Product Identification System documentation. Confirm that the 'E' temperature grade corresponds to the required commercial operating range (-20°C to +70°C). Ensure the package type matches the 14-Lead QFN footprint and check if the media type aligns with tape-and-reel or tube packaging requirements.

Selection Notes

Select this component when designing systems requiring compliance with PCIe Gen1 through Gen4 standards without external crystals. The dual-output configuration supports simultaneous HCSL and LVDS signaling. Verify that the power supply voltage remains within the 2.25V to 3.6V range and that the thermal environment stays within the specified -20°C to +70°C commercial limits.

Part Context

This part belongs to the DSC557-03 series, which features two outputs. Other variants in the family include the DSC557-04 (three outputs) and DSC557-05 (four outputs), all sharing similar MEMS-based architecture but differing in pin count and output capacity.

Replacement Considerations

The datasheet notes that the DSC557-03 can directly replace existing ICS557-03 clock generators. No other direct cross-model replacements are explicitly listed in the provided documentation.