PI6LC48P03LIE

Overview

The PI6LC48P03LIE is a 3-output LVPECL synthesizer from the HiFlex family, designed for Ethernet reference clock generation. It supports 2.5V or 3.3V supply modes and accepts either a crystal (31.25MHz or 26.041666MHz) or LVCMOS/LVTTL input. The device generates frequencies of 125MHz, 156.25MHz, 312.5MHz, and 625MHz via four frequency select pins. It features ultra-low phase jitter, typically 0.3ps RMS at 156.25MHz (12kHz–20MHz). Operating in industrial ambient temperatures (-40°C to +85°C), it is housed in a lead-free 24-TSSOP package.

Feature Summary

• Three differential LVPECL output pairs with selectable divider settings
• Ultra-low phase jitter: 0.3ps typical RMS at 156.25MHz (12kHz–20MHz)
• Supports 2.5V and 3.3V full supply voltage modes
• Configurable via 4 frequency select pins for standard Ethernet rates

Applications

• Networking systems
• Ethernet interface synchronization

Procurement Notes

Verify the 'I' suffix confirms the industrial temperature range (-40°C to +85°C) and the 'E' suffix indicates Pb-free/Green compliance. Confirm whether the 'X' suffix is present for tape-and-reel packaging; its absence implies tube packaging. Cross-reference the specific ordering code against the manufacturer's current datasheet revision to ensure component availability and pinout consistency.

Selection Notes

Select this component when low phase jitter is critical for Ethernet applications. Ensure the design accommodates separate power supplies for VDD, VDDA, and VDDO to minimize noise coupling. Verify that the system requires LVPECL outputs and can support the necessary termination resistors (150Ω to GND, 100Ω across CLK/CLK#). Check if the required frequency matches the supported set of 125MHz, 156.25MHz, 312.5MHz, or 625MHz.

Part Context

This part belongs to the Pericom HiFlex family of high-performance clock solutions, now manufactured by Diodes Incorporated. It is specifically optimized for generating Ethernet reference clocks using proprietary low phase noise PLL technology. The device integrates a crystal oscillator interface or single-ended clock input capability within a compact 24-pin TSSOP footprint.

Replacement Considerations

The PI6LC48P03LE serves as the commercial temperature variant of this component. Both share identical electrical specifications and pinouts but differ in operating temperature ranges. Verify thermal requirements before substituting.