PI6C557-03BQE

Overview

The PI6C557-03BQE is a PCIe 3.0 compliant spread spectrum clock generator manufactured by Diodes Incorporated. It features an integrated Phase-Locked Loop (PLL) and accepts a 25MHz crystal or clock input to generate two differential HCSL outputs at selectable frequencies of 25, 100, 125, or 200MHz. The device operates on a 3.3V supply with a range of 3.0V to 3.6V and draws 95mA. It supports spread spectrum modulation options of -0.5%, -0.75%, or no spread via external pins. Packaged in a 16-pin QSOP, it functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• PCIe 3.0 compliant with low phase jitter (0.45ps RMS typical high frequency).
• Generates two differential HCSL outputs at 25, 100, 125, or 200MHz.
• Configurable spread spectrum modulation (-0.5%, -0.75%, or none).
• Industrial operating temperature range from -40°C to +85°C.

Applications

• PCI Express Gen 3 systems for EMI reduction.
• Ethernet applications requiring precise clocking.
• PC and embedded system motherboard designs.

Procurement Notes

Verify the package type matches the QSOP-16 specification when sourcing. Confirm that the component meets RoHS and Halogen-free requirements if environmental compliance is required for the assembly process. Ensure the ordering suffix corresponds to the specific tape and reel or tube packaging needed for production.

Selection Notes

Select this component when designing for PCIe 3.0 interfaces requiring spread spectrum capabilities to minimize electromagnetic interference. The device requires a 25MHz fundamental mode parallel resonant crystal with less than 300PPM error across the temperature range. External termination resistors are necessary for proper output drive configuration.

Part Context

This part belongs to the PI6C557 series of clock generators designed for high-speed serial interface applications. The 'QE' suffix indicates the 16-pin QSOP package variant. Other variants in the family include TSSOP packages and different output configurations, but this specific model provides dual HCSL outputs optimized for PCIe compliance.

Replacement Considerations

Direct replacements must maintain the 16-pin QSOP footprint and support PCIe 3.0 specifications. Verify that alternative components offer compatible HCSL output levels and similar jitter performance metrics to ensure signal integrity in existing designs.