PI6C557-05BLEX

Overview

The PI6C557-05BLEX is a spread spectrum clock generator compliant with PCI Express 3.0 and Ethernet requirements, manufactured by Diodes Incorporated. It utilizes a Phase-Locked Loop (PLL) to accept a 25MHz crystal input and generate four pairs of differential outputs at selectable frequencies of 100MHz or 200MHz. The device supports HCSL and LVDS output formats, operates on a 3.3V ±5% supply voltage, and features configurable spread spectrum modulation (-0.5%, -1.0%, -1.5%) via external pins. Packaged in a 20-TSSOP format, it is designed for industrial temperature ranges from -40°C to +85°C.

Feature Summary

• PCIe 3.0 compliant with low phase jitter (0.48ps RMS typical high frequency)
• Generates four differential output pairs (HCSL/LVDS compatible) at 100MHz or 200MHz
• Configurable spread spectrum selection (-0.5%, -1.0%, -1.5%, no spread) via S0-S2 pins
• Operates within an industrial temperature range of -40°C to +85°C

Applications

• PCI Express (PCIe) systems requiring EMI reduction
• Ethernet applications compliant with timing specifications
• PC and embedded systems utilizing spread spectrum clocking

Procurement Notes

Verify the 'X' suffix indicates Tape/Reel packaging configuration. Confirm RoHS compliance status as fully lead-free and green. Ensure ordering aligns with the specific 20-TSSOP package dimensions provided in the mechanical data.

Selection Notes

Select this component when a 25MHz crystal input is available and four differential clock outputs are required. Verify that the target system supports either HCSL or LVDS signal levels. Check pin configurations for Spread Spectrum and Output Enable control if dynamic adjustment is needed.

Part Context

This part belongs to the PI6C557 series of PCIe clock generators. The 'BLE' designation identifies the specific variant with Lead-Free/Green attributes and TSSOP-20 packaging, while the 'EX' suffix denotes the reel packaging method.

Replacement Considerations

Consult the manufacturer's documentation for qualified alternatives. Cross-referencing requires matching the 20-TSSOP package, 1:4 ratio, and PCIe 3.0 jitter specifications.