DSC557-0341FE1T

Overview

The DSC557-0341FE1T is a two-output PCI Express clock generator from Microchip Technology, utilizing silicon MEMS technology to eliminate the need for an external quartz crystal. It generates a stable 100 MHz differential clock signal compliant with PCIe Gen1 through Gen4 common clock specifications. The device operates within a supply voltage range of 2.25V to 3.6V and supports HCSL and LVCMOS output formats. Designed for commercial applications, it functions reliably across a temperature range of -20°C to +70°C. Packaged in a compact 14-VFQFN (2.5x3.2 mm) footprint, it offers low power consumption and high immunity to shock and vibration.

Feature Summary

• Complies with PCIe Gen1/2/3/4 Common Clock Specifications
• Integrated MEMS Resonator eliminates external 25 MHz crystal requirements
• Supports HCSL and LVCMOS output formats at 100 MHz
• Commercial temperature grade: -20°C to +70°C

Applications

• PCI Express systems requiring Gen1 to Gen4 timing solutions
• Communications and networking equipment such as routers and switches
• Storage area networks (SAN), network attached storage (NAS), and solid-state drives (SSD)

Procurement Notes

Verify the specific ordering suffix against the manufacturer's Product Identification System documentation to confirm output format combinations, package type, temperature range, and frequency stability. Ensure that the selected variant matches the required application environment and electrical interface specifications before procurement.

Selection Notes

Select this component when a low-jitter, crystal-less PCIe clock source is required for commercial-grade environments. Confirm that the available output formats (HCSL/LVCMOS) align with the target system's input requirements. Verify that the operating temperature range of -20°C to +70°C meets the deployment conditions.

Part Context

This part belongs to the DSC557-03 series, which provides two-output PCIe clock generators. Other variants in the family offer different output configurations, industrial or extended industrial temperature ratings, and alternative packaging options to suit diverse design constraints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing should be performed using official Microchip compatibility tools or by verifying pinout and electrical parameter equivalence with existing designs.