GND

D+

D–

TPD2E009

SLVS953B – JUNE 2009 – REVISED AUGUST 2015

www.ti.com

7 Detailed Description

7.1 Overview

TPD2E009 is a two-channel ESD TVS that provides ±8-kV IEC 61000-4-2 contact and air-gap ESD protection.

The 0.7-pF unidirectional diode architecture is suitable for signals that range from 0 V to 5.5 V and can support

data rates up to 6 Gbps. The industry-standard packages are convenient for placement in applications with

limited space.

7.2 Functional Block Diagram

7.3 Feature Description

TPD2E009 is a unidirectional TVS offering IEC 61000-4-2 Level 4 Contact ESD protection. This device protects

circuits from ESD strikes up to ±8-kV contact and ±8-kV air-gap. The device can also handle up to 5-A surge

current (IEC 61000-4-5 8/20

μs). The low capacitance of 0.7 pF supports a data rate up to 6 Gbps. TPD2E009

has a small dynamic resistance of 1

Ω, which makes the clamping voltage low when the device is actively

protecting other circuits. For example, the clamping voltage is only 8 V when the device is taking a 1-A transient

current. Low leakage allows the diode to conserve power when working below the VRWM.

7.4 Device Functional Modes

The TPD2E009 device is a passive clamp that has low leakage during normal operation when the voltage

between an I/O pin and GND is below VRWM. The device activates when the voltage is between an I/O pin and

GND goes above VBR. During ESD events, transient voltages as high as ±8 kV can be clamped between the

protected line and ground. When the voltages on the protected lines fall below the trigger voltage, the device

reverts back to the low-leakage passive state.

6

Submit Documentation Feedback

Copyright © 2009–2015, Texas Instruments Incorporated

Product Folder Links: TPD2E009