PI6C557-03AQLEX

Overview

The PI6C557-03AQLEX is a spread spectrum clock generator compliant with PCI Express 2.0 and Ethernet requirements, designed for automotive applications. It utilizes a Phase-Locked Loop (PLL) to accept a 25MHz crystal or clock input and generate two differential HCSL outputs at selectable frequencies of 25MHz, 100MHz, 125MHz, or 200MHz. The device supports spread selection of -0.5%, -0.75%, or no spread via external pins. Operating on a 3V to 3.6V supply, it features AEC-Q100 qualification and is housed in a 16-TSSOP package.

Feature Summary

• PCIe 2.0 compliant with phase jitter of 2.1ps RMS (typical)
• Supports output frequencies of 25MHz, 100MHz, 125MHz, and 200MHz
• Provides configurable spread spectrum options: -0.5%, -0.75%, or bypass
• AEC-Q100 qualified for automotive environments (-40°C to +85°C)

Applications

• Automotive embedded systems requiring EMI reduction
• PCI Express 2.0 clock generation
• Ethernet system timing

Procurement Notes

Verify the specific ordering suffix 'LEX' corresponds to the tape and reel packaging configuration as defined in the manufacturer's documentation. Confirm that the component meets the required IATF 16949 manufacturing standards for automotive grade parts. Ensure compatibility with the specified 16-TSSOP footprint during procurement planning.

Selection Notes

Select this component when designing for automotive PCIe 2.0 or Ethernet interfaces requiring spread spectrum capabilities. The device requires a 25MHz fundamental mode parallel resonant crystal. Designers must account for the 95mA operating supply current and implement appropriate decoupling capacitors near the VDD pins to ensure signal integrity.

Part Context

This part belongs to the PI6C557 family of clock generators from Diodes Incorporated. The 'AQ' designation indicates automotive qualification and compliance, while the 'LEX' suffix specifies the 16-pin TSSOP package with tape and reel packaging. It serves as a specialized timing solution for high-speed serial interface applications in regulated industries.

Replacement Considerations

Direct replacements within the same family include variants like the PI6C557-03ALEX. When substituting, verify that the alternative maintains the same AEC-Q100 qualification status and package dimensions. Ensure the replacement supports the required output frequencies and spread spectrum configurations.