DSC557-0333SI1

Overview

The DSC557-0333SI1 is a two-output PCI Express clock generator from the DSC557-03 series, manufactured by Microchip Technology. It utilizes silicon MEMS technology to generate a 100 MHz differential LVDS output without requiring an external crystal. The device complies with PCIe Gen1/2/3/4 common clock specifications and features an integrated PLL. It operates on a supply voltage of 2.25V to 3.6V and supports an industrial temperature range of -40°C to +85°C. The component is housed in a 16-TSSOP surface-mount package.

Feature Summary

• Complies with PCIe Gen1, Gen2, Gen3, and Gen4 Common Clock Specifications
• Integrated MEMS Resonator eliminates the need for an external 25 MHz crystal
• Provides 100 MHz differential LVDS output with low jitter performance
• Features Output Enable/Disable control via the OE pin

Applications

• PCIe compliant systems requiring common clock architecture
• Communications and networking equipment such as routers and switches
• Storage solutions including SAN, NAS, SSD, and JBOD
• Industrial, medical, and avionics embedded applications

Procurement Notes

Verify the package type against official documentation, as the DSC557-03 family is primarily available in a 14-Lead QFN (2.5 mm x 3.2 mm). Confirm that the 16-TSSOP variant matches the specific ordering suffix requirements for the intended design implementation.

Selection Notes

Select this model for designs requiring a 100 MHz LVDS output within the -40°C to +85°C industrial temperature range. Ensure the power supply voltage remains between 2.25V and 3.6V. Verify that the 16-TSSOP package dimensions are compatible with the PCB land pattern if this specific package is required over the standard QFN option.

Part Context

This component belongs to the DSC557-03 series, which includes dual-output PCIe clock generators. The series replaces traditional quartz oscillators with silicon MEMS technology to improve reliability and reduce board space. Other variants in the family offer different output formats like HCSL or LVCMOS and varying temperature grades.

Replacement Considerations

Direct replacements include other DSC557-03 variants with matching output formats and temperature ranges. Cross-reference part numbers ending in 'FL' for extended industrial temperatures (-40°C to +105°C) or 'FI' for standard industrial temperatures if package compatibility allows.