DSC557-0344SI0T

Overview

The DSC557-0344SI0T 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 HCSL outputs compliant with PCIe Gen1 through Gen4 specifications. The device operates within a supply voltage range of 2.25V to 3.6V and supports an industrial temperature range of -40°C to +85°C. Key features include integrated PLL functionality, output enable/disable control via the OE pin, and low power consumption. The component is housed in a 16-TSSOP package.

Feature Summary

• Complies with PCIe Gen1/2/3/4 Common Clock Specifications
• Integrated MEMS Resonator eliminates external 25 MHz crystal requirements
• Two Output Enable/Disable feature controlled by active-high OE pin
• Low Power Consumption: 30% lower than competing devices

Applications

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

Procurement Notes

Verify the specific package configuration against datasheet documentation. The provided local source indicates a 16-TSSOP package, whereas standard Microchip documentation for the DSC557-03 series typically lists a 14-Lead QFN. Confirm that the ordering suffix 'SI' corresponds to the verified Industrial temperature grade (-40°C to +85°C) and HCSL output format before procurement.

Selection Notes

Select this component for designs requiring compliance with PCIe Gen1 through Gen4 common clock architectures. Ensure the design accommodates the 2.25V to 3.6V supply voltage range. Verify that the 16-TSSOP package dimensions align with the PCB land pattern if sourced from the local supplier, as alternative packages like 14-QFN are also available in the family.

Part Context

This part belongs to the DSC557-03 series, which is designed as a drop-in replacement for legacy quartz-based oscillators. The series leverages silicon MEMS technology to offer improved shock and vibration immunity compared to traditional components. It is intended to accelerate product development in high-speed digital interfaces.

Replacement Considerations

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