DSC557-0344FE0T

Overview

The DSC557-0344FE0T is a two-output PCI Express clock generator utilizing silicon MEMS technology. It generates a 100 MHz differential clock signal compliant with PCIe Gen1, Gen2, Gen3, and Gen4 specifications. The device operates within a supply voltage range of 2.25V to 3.6V and features an integrated MEMS resonator, eliminating the need for external crystals. It provides HCSL and LVDS output formats in a space-saving 14-lead QFN package (2.5 mm x 3.2 mm). Designed for commercial applications, it supports an operating temperature range of -20°C to +70°C.

Feature Summary

• Complies with PCIe Gen1/2/3/4 Common Clock Specifications
• Integrated MEMS Resonator eliminates external 25 MHz crystal requirements
• Two Output Formats: HCSL and LVDS options available
• Space Saving 14-Lead QFN Package (2.5 mm x 3.2 mm)

Applications

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

Procurement Notes

Verify the specific ordering suffix 'E' corresponds to the Commercial temperature grade (-20°C to +70°C) as defined in the Product Identification System. Confirm that the 'T' suffix indicates Tape and Reel packaging rather than Tube. Ensure the CLK1 and CLK0 outputs match the required HCSL and LVDS configurations specified by the '44' code before procurement.

Selection Notes

Select this component when designing systems requiring compliance with PCIe Gen1 through Gen4 common clock standards. The DSC557-0344FE0T is suitable for commercial-grade environments (-20°C to +70°C). For industrial or extended industrial temperature ranges, verify if the 'I' or 'L' suffix variants are necessary. The device offers low power consumption, approximately 30% lower than competing devices, making it efficient for dense designs.

Part Context

This part belongs to the DSC557-03 series, which are two-output PCIe clock generators. The series replaces traditional quartz oscillators with silicon MEMS technology to improve reliability against shock and vibration. Other variants in the family include models with different output combinations (LVCMOS, LVDS, HCSL), temperature grades, and packaging options.

Replacement Considerations

The datasheet notes that the DSC557-03 can directly replace existing ICS557-03 clocks. Verify pin compatibility and electrical characteristics when substituting other MEMS or quartz-based PCIe clock generators.