PI6LC48P25104LEX

Overview

The PI6LC48P25104LEX is a single-output LVPECL clock synthesizer from the HiFlex family, manufactured by Diodes Incorporated. It generates Ethernet reference frequencies of 156.25MHz or 187.5MHz using a 25MHz crystal input. The device features ultra-low phase jitter (0.3ps typical at 156.25MHz) and supports both 3.3V and 2.5V supply modes. Packaged in an 8-TSSOP, it operates within commercial (-40°C to +85°C) temperature ranges.

Feature Summary

• Single differential LVPECL output with frequency range 145MHz to 187.5MHz
• Ultra-low RMS phase jitter: 0.3ps typical (12kHz-20MHz) at 156.25MHz
• Dual voltage operation: Full 3.3V or 2.5V supply modes
• Freq_SEL pin allows selection between 156.25MHz and 187.5MHz outputs

Applications

• Networking systems
• Servers and storage systems
• SATA/SAS interfaces
• Ethernet interface applications

Procurement Notes

Verify the 'LEX' suffix indicates tape-and-reel packaging for the industrial grade variant. Confirm RoHS3 compliance status via current manufacturer documentation. Check for End-of-Life notices as Pericom products may have transitioned statuses.

Selection Notes

Select this component when a single LVPECL output is required for high-speed networking. Ensure the design accommodates separate VDD and VDDA power supplies with specific filtering (10Ω resistor for VDDA) to maintain jitter performance. Verify crystal specifications match the recommended 18pF load capacitance.

Part Context

This part belongs to the PI6LC48P series, designed for low-phase-noise clock generation. It utilizes proprietary PLL technology to minimize jitter, making it suitable for demanding serial data transmission standards like SATA and SAS where signal integrity is critical.

Replacement Considerations

Check for direct replacements within the PI6LC48P family. Verify if the LE (Commercial) or LIE (Industrial) variants meet thermal requirements. Cross-reference with newer Diodes Incorporated clock generators if availability is constrained.