PI6LC48H04LIEX

Overview

The PI6LC48H04LIEX is a clock generator compliant with PCI Express 4.0/3.0/2.0/1.0 and Ethernet standards, designed for networking or embedded systems. It accepts a 25MHz crystal input and generates four pairs of differential Low Power HCSL outputs at selectable frequencies: 156.25MHz, 100MHz, 125MHz, 133.33MHz, and 200MHz. The device operates on a 3.3V±5% or 2.5V±5% supply voltage. Key electrical parameters include a typical cycle-to-cycle jitter of 35ps and an RMS phase jitter of 0.3ps to 0.32ps across the supported frequencies.

Feature Summary

• PCIe 4.0/3.0/2.0/1.0 compliant with low phase jitter (0.45ps RMS typical)
• Four differential Low Power HCSL outputs with adjustable amplitude via VSWING_CTRL
• Supports 2.5V and 3.3V supply voltages with industrial temperature range (-40°C to +85°C)
• Integrated PLL with 25MHz crystal or clock input

Applications

• Networking systems
• Embedded systems
• PCIe interface designs

Procurement Notes

Verify the component against Diodes Incorporated datasheet DS42507 Rev 1-2. Confirm the package type is 20-pin TSSOP (L) and that the suffix 'E' indicates lead-free/green status while 'X' denotes tape and reel packaging. Ensure compatibility with required output frequencies and supply voltages before procurement.

Selection Notes

Select this component when PCIe 4.0 compliance and low jitter are required for networking applications. Choose based on the specific output frequency needed (100MHz, 125MHz, 156.25MHz, 133.33MHz, or 200MHz) determined by S0/S1 pin settings. Verify that the system supports either 2.5V or 3.3V logic levels, as the device accommodates both.

Part Context

The PI6LC48H04 belongs to the HiFlex family of high-performance clock solutions from Diodes Incorporated. It is specifically engineered to meet the stringent timing requirements of modern high-speed serial interfaces like PCIe and Ethernet, providing a compact alternative to discrete clock generation circuits.

Replacement Considerations

No direct public substitute part numbers are documented in the provided source material. For replacements, verify functional equivalence regarding PCIe compliance, output count, jitter specifications, and package dimensions.

FAQ

What are the available output frequencies for the PI6LC48H04?

The device provides four differential outputs at selectable frequencies: 156.25MHz, 100MHz, 125MHz, 133.33MHz, and 200MHz, depending on the configuration of the S0 and S1 pins.

How is the output amplitude controlled?

The output amplitude is controlled by the VSWING_CTRL pin, which allows tri-level selection for different voltage swings (0.63V, 0.75V default, or 0.87V).

Is the PI6LC48H04 compatible with LVDS inputs?

Yes, the datasheet specifies LVDS compatible outputs and includes application information for driving LVDS inputs.