SLVS953B June   2009  – August 2015 TPD2E009


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Community Resources
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

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

TPD2E009 dbz_drt_circuit_lvs953.gif

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.