DSA557-0344FL0TVAO

Overview

The Microchip Technology DSA557-0344FL0TVAO is a PCI Express clock generator utilizing silicon MEMS technology. It provides two 100 MHz differential outputs with HCSL format, eliminating the need for external crystals. The device operates within a supply voltage range of 2.25V to 3.63V and supports an extended temperature range from -40°C to +105°C. Packaged in a compact 14-VFQFN (2.5x3.2 mm) footprint, it features dedicated output enable pins and complies with PCIe Gen1/2/3/4 common clock specifications.

Feature Summary

• Automotive AEC-Q100 Qualified with ±100 ppm frequency stability
• Integrated MEMS resonator eliminates external 25 MHz crystal requirement
• Two 100 MHz HCSL differential outputs with dedicated OE pins
• High reliability with MIL-STD-883 qualification and superior shock/vibration immunity

Applications

• Automotive Infotainment Systems
• Advanced Driver Assistance Systems (ADAS)
• Autonomous Driving Platforms
• In-Vehicle Network Interfaces

Procurement Notes

Verify the 'T' suffix indicates tape and reel packaging (1000 units/reel) rather than tube packaging. Confirm the '0' stability code corresponds to ±100 ppm requirements. Ensure the 'L' temperature code matches the -40°C to +105°C operational specification for the target application environment.

Selection Notes

Select this component when two independent 100 MHz differential clocks are required for PCIe compliance. The 14-pin QFN package is suitable for space-constrained designs. Verify that the HCSL output format meets receiver input requirements; LVDS or LVCMOS options require different ordering suffixes.

Part Context

This part belongs to the DSA557 series, which includes variants with three (DSA557-04) and four (DSA557-05) outputs. The DSA557-03 variant specifically offers two outputs in a smaller 14-lead QFN package compared to the 20-lead VQFN used by higher-output models.

Replacement Considerations

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