DSC557-0343FI0T

Overview

The DSC557-0343FI0T is a two-output PCI Express clock generator from Microchip Technology, utilizing silicon MEMS technology to eliminate the need for external quartz crystals. It provides 100 MHz differential outputs in HCSL and LVDS formats within a 14-VFQFN package. The device operates on a 2.25V to 3.6V supply with an industrial temperature range of -40°C to +85°C. It features integrated PLLs, low power consumption, and high shock and vibration immunity, meeting PCIe Gen1 through Gen4 common clock specifications.

Feature Summary

• Two-output architecture providing 100 MHz HCSL and LVDS signals
• Integrated MEMS resonator eliminates external 25 MHz crystal requirements
• Compliant with PCIe Gen1/2/3/4 common clock specifications
• Industrial temperature range (-40°C to +85°C) with ±100 ppm frequency stability

Applications

• Ethernet (1G, 10GBASE-T/KR/LR/SR)
• Storage Area Networks (SAN), Network Attached Storage (NAS), SSDs
• Routers, switches, gateways, and VoIP systems
• Wireless access points and passive optical networks

Procurement Notes

Verify the specific ordering suffix against the manufacturer's Product Identification System to confirm output formats, temperature grade, and packaging media. Confirm that the requested configuration matches the required PCIe generation jitter performance and voltage supply parameters for the target application design.

Selection Notes

Select this component when a dual-output PCIe timing solution is required without external crystals. Ensure the system design supports the 2.25V to 3.6V supply range and accommodates the 14-pin QFN footprint. Verify that the HCSL and LVDS output combinations meet the interface requirements of the connected PCIe endpoints.

Part Context

This part belongs to the DSC557-03 series, which offers two-output configurations in a space-saving 14-lead QFN package. It serves as a direct replacement for legacy quartz-based oscillators, offering improved reliability and reduced board space while maintaining strict jitter performance standards for high-speed serial communication interfaces.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.