PI6C557-01BQZHIEX

Overview

The PI6C557-01BQZHIEX is a spread spectrum clock generator compliant with PCI Express 3.0 and Ethernet standards, manufactured by Diodes Incorporated. It accepts a 25MHz crystal or clock input and generates a single differential HCSL output at 100MHz. The device operates on a 3.0V to 3.6V supply voltage within an industrial temperature range of -40°C to +85°C. Key electrical parameters include a typical RMS jitter of 0.45ps (High Freq.) and cycle-to-cycle jitter of 35ps. It supports spread selection of -0.5% or no spread via external pins.

Feature Summary

• PCIe 3.0 compliant with low phase jitter (0.45ps RMS typ.)
• Generates 100MHz HCSL differential output from 25MHz input
• Spread spectrum options: -0.5% down-spread or no spread
• Industrial temperature range (-40°C to +85°C)
• 16-pin TQFN package with exposed pad

Applications

• PCI Express 3.0 clock generation for PC systems
• Embedded systems requiring EMI reduction
• Ethernet interface clocking applications

Procurement Notes

Verify the ordering suffix 'ZHIE' corresponds to the Pb-free, Green, 16-pin TQFN package in industrial grade. Confirm if 'X' is required for tape and reel packaging, as the base code 'PI6C557-01BZHIE' may imply cut tape or bulk depending on specific distributor conventions. Ensure the source document explicitly links the full part number to the specified package and temperature grade.

Selection Notes

Select this component when a PCIe 3.0 compliant clock source with HCSL outputs is required. It is suitable for designs needing spread spectrum modulation to reduce EMI, specifically offering -0.5% down-spread. Ensure the design accommodates the 3.3V ±10% supply requirement and utilizes a 25MHz crystal with appropriate load capacitance calculations.

Part Context

This device belongs to the PI6C557 series of clock generators. The '01B' indicates one HCSL output configuration. The 'Q' in the model name typically denotes the industrial temperature grade, while 'ZHIE' specifies the 16-pin TQFN package, Pb-free status, and internal revision. It serves as a timing solution for high-speed serial interfaces like PCIe.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Diodes Incorporated or authorized distributors for direct replacements or pin-compatible alternatives that meet PCIe 3.0 HCSL specifications.