PI6C557-03BQEX

Overview

The PI6C557-03BQEX is a PCIe 3.0 compliant spread spectrum clock generator manufactured by Diodes Incorporated. It accepts a 25 MHz crystal or clock input and provides two differential HCSL outputs at selectable frequencies of 25, 100, 125, or 200 MHz. The device operates on a 3.3V supply with an operating temperature range of -40°C to +85°C. Key electrical specifications include a typical cycle-to-cycle jitter of 35 ps and a maximum output frequency of 200 MHz. It is housed in a 16-pin QSOP package.

Feature Summary

• PCIe 3.0 compliant with phase jitter as low as 0.45ps RMS (High Freq. Typ.)
• Supports spread spectrum modulation options: -0.5%, -0.75%, and no spread via external pins
• Provides two differential HCSL outputs with LVDS compatibility
• Configurable output frequencies of 25, 100, 125, and 200 MHz using S0/S1 select pins

Applications

• PC motherboard clock generation
• Embedded systems requiring EMI reduction
• Ethernet interface clocking
• PCI Express Gen 3 compliant hardware designs

Procurement Notes

Verify the 'X' suffix indicates tape and reel packaging for automated assembly. Confirm the 'E' suffix denotes lead-free and green status. Ensure the QSOP package variant matches the specific footprint requirements of the target PCB layout.

Selection Notes

Select this component when PCIe 3.0 compliance and low jitter are required. The QSOP package is suitable for applications where board space allows for its dimensions. Verify that the 95 mA operating current fits within the system's power budget constraints.

Part Context

This part belongs to the PI6C557 series of clock generators from Diodes Incorporated. The 'Q' suffix specifically identifies the 16-pin QSOP package, distinguishing it from the TSSOP variant (PI6C557-03BLE). The 'X' suffix differentiates the bulk tape/reel packaging from tube packaging.

Replacement Considerations

The PI6C557-03BLE serves as a functional equivalent with identical electrical characteristics but utilizes a 16-pin TSSOP package instead of QSOP.