PI6LC48P0401LEX

Overview

The PI6LC48P0401 is a four-output LVPECL synthesizer designed for Ethernet reference clock generation. It supports output frequencies of 156.25MHz, 125MHz, and 62.5MHz using a 25MHz crystal or single-ended LVCMOS/LVTTL input. The device operates on 3.3V or 2.5V supplies with typical RMS phase jitter of 0.23ps at 156.25MHz (1.875MHz–20MHz). It features separate VDD, VDDA, and VDDO power pins to isolate switching noise from the internal PLL.

Feature Summary

• Four differential LVPECL output pairs
• Selectable 25MHz crystal or LVCMOS/LVTTL single-ended clock input
• Supports 156.25MHz, 125MHz, and 62.5MHz outputs via N_SEL pins
• Typical RMS phase jitter of 0.23ps at 156.25MHz (1.875MHz–20MHz)
• Operates in full 3.3V or 2.5V supply modes

Applications

• Networking systems

Procurement Notes

Verify package type and temperature grade against ordering codes: 'LE' indicates Pb-free/Green 24-pin TSSOP Commercial, while 'LIE' denotes Industrial grade. Adding an 'X' suffix specifies tape and reel packaging. Confirm RoHS compliance status through official documentation.

Selection Notes

Select based on required output frequency and supply voltage (3.3V or 2.5V). Ensure proper power supply filtering using 0.1μF bypass capacitors per pin and a 10Ω resistor with 10μF capacitor for VDDA isolation. Use 18pF parallel resonant crystals for optimal performance.

Part Context

The PI6LC48P0401 belongs to Pericom’s HiFlex family of high-performance clock solutions, now part of Diodes Incorporated. It utilizes proprietary low phase noise VCO technology to achieve ultra-low jitter, making it suitable for demanding Ethernet interface applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.