PI7AT04CEX

Overview

The PI7AT04CEX is an active transmission line clamp manufactured by Diodes Incorporated, originally developed by Pericom Semiconductor. It actively clamps overshoot and undershoot voltages on up to four independent data lines to mitigate signal reflections caused by improper termination. The device operates with near-zero quiescent supply current (maximum 10µA) and features a low capacitance of 5pF typical. It supports both 5V and 3.3V logic levels, providing high ESD protection of 4kV. Packaged in a 6-pin SC-70 (SOT-363) surface-mount case, it reduces electromagnetic interference (EMI) and improves noise margins without requiring additional drive power.

Feature Summary

• Active clamping for up to four transmission lines
• Near zero quiescent supply current: 10µA maximum
• Low capacitance: 5pF typical
• High 4kV ESD protection

Applications

• CPU Termination
• Backplane Termination
• General Line Termination

Procurement Notes

Verify the manufacturer designation as Diodes Incorporated while noting the original design origin from Pericom Semiconductor. Confirm the package type is 6-pin SC-70 (SOT-363) and the suffix 'EX' indicates Tape & Reel packaging. Ensure the component meets Pb-free and Green specifications as stated in the datasheet.

Selection Notes

Select this component for applications requiring active termination where characteristic impedance varies due to card additions or removals. It is suitable for systems needing reduced EMI and minimal line loading. Note that the PI7AT04 does not replace parallel terminator resistors but works alongside them to limit high-frequency ring voltage.

Part Context

This part belongs to the SOTINY™ series of low voltage, zero-delay active transmission line clamps. The PI7AT04CEX is the tape and reel variant of the PI7AT04CX, sharing identical electrical characteristics and pinout configurations within the 6-pin SC-70 package family.

Replacement Considerations

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