DSA557-0344FI1TVAO

Overview

The DSA557-0344FI1TVAO is a two-output PCI Express clock generator from Microchip Technology, utilizing silicon MEMS technology to generate low-jitter 100MHz differential clocks. It complies with PCIe Gen1/2/3/4 common clock specifications and operates within a supply voltage range of 2.25V to 3.63V. The device features an integrated MEMS resonator, eliminating the need for external crystals. It supports HCSL, LVDS, and LVCMOS output formats and includes dedicated output enable pins. Qualified to AEC-Q100 standards, it operates in automotive temperature ranges of -40°C to +85°C (Grade 3) or -40°C to +105°C (Grade 2).

Feature Summary

• Automotive AEC-Q100 qualified with MIL-STD-883 shock and vibration immunity.
• Integrated MEMS resonator eliminates external 25MHz crystal requirements.
• Supports PCIe Gen1/2/3/4 common clock architecture with low jitter performance.
• Offers flexible output formats including HCSL, LVDS, and LVCMOS.

Applications

• Automotive infotainment systems
• Advanced Driver Assistance Systems (ADAS)
• Autonomous driving platforms
• In-vehicle network interfaces

Procurement Notes

Verify the specific ordering suffix 'I' corresponds to the required -40°C to +85°C operating temperature range as defined in the Product Identification System. Confirm that the 'F' package designation matches the 14-Lead QFN requirement. Ensure the '44' output format code aligns with the desired HCSL configuration for both outputs. Cross-reference the stability specification associated with the part number to confirm compliance with system timing tolerances.

Selection Notes

Select this component when designing for automotive environments requiring high reliability against shock and vibration. The DSA557-03 series is suitable for applications needing two independent 100MHz clock sources. Consider the power consumption benefits, which are approximately 30% lower than competing devices. Verify that the 14-VFQFN package dimensions fit the available PCB space constraints.

Part Context

This device belongs to the DSA557 series of multiple-output MEMS PCIe clock generators. The DSA557-03 variant specifically provides two outputs, distinguishing it from the three-output DSA557-04 and four-output DSA557-05 models. All variants share the same core MEMS technology and compliance with automotive standards, differing primarily in pin count and output capacity.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip directly for alternative components or updated product line information.