SLVS615F July   2006  – December 2016 TPD4E002

PRODUCTION DATA.  

  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—JEDEC Specification
    3. 6.3 ESD Ratings—IEC Specification
    4. 6.4 Recommended Operating Conditions
    5. 6.5 Thermal Information
    6. 6.6 Electrical Characteristics
    7. 6.7 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
        1. 8.2.2.1 Signal Range on I/O1 Through I/O2
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

Application Information

The TPD4E002 device is a TVS diode array typically used to provide a path to ground for dissipating ESD events on high-speed signal lines between a human interface connector and a system. As the current from ESD passes through the TVS, only a small voltage drop is present across the diode. This is the voltage presented to the protected integrated circuit (IC). The triggered TVS holds this voltage, VCLAMP, to a safe level for the protected IC.

Typical Application

In a typical design example, one TPD4E002 device is being used to protect an IC against potential ESD from a four-channel human interface port, as shown in Figure 4.

TPD4E002 App_Schem.gif Figure 4. Typical Application for TPD4E002

Design Requirements

Table 1 lists the parameters for this typical application.

Table 1. Design Parameters

DESIGN PARAMETER VALUE
Signal's voltage range on I/O1, I/O2, I/O3, and I/O4 0 V to 5 V
Operating frequency < 100 MHz

Detailed Design Procedure

To begin the design process, some parameters must be decided upon; the designer must know the following:

  • Voltage range of the signal on all protected lines
  • Operating frequency on all protected lines

Signal Range on I/O1 Through I/O2

The TPD4E002 device has 4 identical protection channels for signal lines. The symmetry of the device provides flexibility when selecting which of the four I/O channels will protect which signal lines. Any I/O supports a signal range of 0 V to 5 V and up to 100 MHz.

Application Curves

TPD4E002 respesd_lvs615.gif Figure 5. ESD Clamp Voltage at I/O Pins: IEC6100-4-2
15-kV Contact Discharge
TPD4E002 g_peakpulse_lvs817.gif
Figure 6. Pulse Waveform (8/20-µs Pulse)