PI6LC48P25104LIEX

Overview

The PI6LC48P25104LIEX is a single-output LVPECL clock synthesizer from the HiFlex family, designed for Ethernet reference clock generation. It operates on a 25MHz crystal input to produce 156.25MHz or 187.5MHz outputs via Freq_SEL control. The device supports full 3.3V (3.135–3.465V) and 2.5V (2.375–2.625V) supply modes. Key electrical specifications include an RMS phase jitter of 0.3ps typical at 156.25MHz (12kHz–20MHz) and 0.33ps at 187.5MHz. It features separate VDD and VDDA power pins for noise isolation and is housed in an 8-TSSOP package.

Feature Summary

• Single differential LVPECL output with frequency range of 145MHz to 187.5MHz
• Ultra-low phase jitter: 0.3ps typical at 156.25MHz and 0.33ps at 187.5MHz (12kHz–20MHz)
• Dual voltage operation supporting both 3.3V and 2.5V supply rails
• Frequency selection via Freq_SEL pin allows multiplication by 6.25 or 7.5

Applications

• Networking systems
• Servers and storage systems
• SATA/SAS interface clocking
• Ethernet interface synchronization

Procurement Notes

Verify the 'I' suffix indicates industrial temperature range (-40°C to +85°C) and 'E' denotes lead-free/green compliance. Confirm 'X' suffix specifies tape and reel packaging. Check datasheet revision A (07/08/2013) for accurate thermal and electrical parameters. Ensure power supply filtering techniques are followed to maintain specified jitter performance.

Selection Notes

Select this component when a low-jitter LVPECL clock source is required for Ethernet or storage interfaces. Choose based on supply voltage compatibility (3.3V vs 2.5V). Use Freq_SEL logic level to determine if 156.25MHz or 187.5MHz output is needed with a 25MHz crystal. Ensure PCB layout adheres to the recommended power supply filtering and crystal interface guidelines to minimize noise.

Part Context

This part belongs to Pericom’s HiFlex family of high-performance clock solutions, now under Diodes Incorporated. It utilizes proprietary low phase noise PLL technology. The device is optimized for generating precise reference clocks for networking and server storage applications, offering a compact 8-pin TSSOP footprint compared to larger packages.

Replacement Considerations

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