DSC557-0333SL1

Overview

The DSC557-0333SL1 is a two-output PCI Express clock generator from the DSC557 series, manufactured by Microchip Technology. It utilizes silicon MEMS technology to generate a 100 MHz differential LVDS clock signal without requiring an external crystal. The device complies with PCIe Gen1 through Gen4 common clock specifications and features an integrated PLL. It operates within a supply voltage range of 2.25V to 3.6V and supports an extended industrial temperature range of -40°C to +105°C. The component is housed in a 16-TSSOP surface-mount package.

Feature Summary

• Two-output architecture generating 100 MHz differential LVDS signals compliant with PCIe Gen1/2/3/4 standards
• Integrated MEMS resonator eliminates the need for an external 25 MHz quartz crystal
• Operates over an extended industrial temperature range (-40°C to +105°C) with a 2.25V to 3.6V supply
• Includes Output Enable (OE) functionality to disable outputs when the OE pin is low

Applications

• Ethernet interfaces including 1G, 10GBASE-T/KR/LR/SR, and FcoE
• Storage area networks (SAN), network-attached storage (NAS), SSDs, and JBOD systems
• Industrial, medical, avionics, security systems, and office automation embedded applications

Procurement Notes

Verify the package type against official documentation, as the DSC557-03 family is primarily documented in a 14-lead QFN format. Confirm that the 16-TSSOP variant meets all electrical requirements for the specific application environment before integration.

Selection Notes

Select this model for designs requiring dual 100 MHz LVDS outputs for PCIe timing. Ensure the design accommodates the 16-TSSOP footprint if specified. Verify power supply filtering requirements, as datasheets recommend a 0.1 μF capacitor on the VDD pin for stability.

Part Context

This component belongs to the DSC557-03 family of two-output PCIe clock generators. It replaces traditional quartz oscillators with silicon MEMS technology to improve reliability and shock resistance. The family supports various output formats including HCSL, LVDS, and LVCMOS across different temperature grades.

Replacement Considerations

Direct replacements include other DSC557-03 variants with different output formats or packages, such as those in the 14-lead QFN package. Cross-reference specific output configurations and temperature ranges to ensure compatibility.