PI6C557-10LEX

Overview

The PI6C557-10LEX is a network clock generator manufactured by Diodes Incorporated, designed for PCI Express applications. It integrates an internal PLL to generate a 100MHz differential output and a 33.3MHz LVCMOS output from a 25MHz crystal input. The device operates on a single 3.3V supply (3.135V to 3.465V) with separate power pins for analog, crystal, and digital sections. It features typical cycle-to-cycle jitter of 60ps at 100MHz and operates within an industrial temperature range of -40°C to +85°C in a 16-pin TSSOP package.

Feature Summary

• Generates 100MHz differential and 33.3MHz LVCMOS outputs from a 25MHz reference
• Integrated high-performance PLL multiplier optimized for PCIe networks
• Separate power supply pins for analog core, crystal oscillator, and outputs
• Typical 60ps cycle-to-cycle jitter at 100MHz output frequency

Applications

• PCI Express network clock generation
• System timing distribution requiring low jitter
• Industrial embedded systems operating in wide temperature ranges

Procurement Notes

Verify the ordering suffix 'LEX' corresponds to the lead-free, green packaging in the 16-TSSOP format. Confirm that the 'X' suffix indicates tape and reel packaging if required for automated assembly. Ensure the component meets RoHS standards as specified in the manufacturer's documentation.

Selection Notes

Select this component when a fixed 1:2 multiplication ratio from a 25MHz source is required. It is suitable for designs needing both differential and single-ended clock signals without external dividers. Verify that the 100Ω differential termination requirement aligns with the PCB layout capabilities.

Part Context

This part belongs to the PI6C557 series of network clock generators originally developed by Pericom Semiconductor Corporation, now produced by Diodes Incorporated. The series provides integrated solutions for generating precise clock signals for high-speed serial interfaces like PCI Express.

Replacement Considerations

Check datasheets for other PI6C557 variants such as PI6C557-03 or PI6C557-01BZHIEX. Differences may include output configurations, package types, or specific jitter performance metrics. Ensure pin compatibility and electrical specifications match before substitution.