SLVUBG5A June   2018  – September 2021 ESD122 , ESD204 , ESD401 , SN65220 , SN65240 , TPD1E01B04 , TPD1E04U04 , TPD1E05U06 , TPD1E10B06 , TPD1E10B06-Q1 , TPD1E10B09 , TPD1E10B09-Q1 , TPD2E001 , TPD2E001-Q1 , TPD2E009 , TPD2E1B06 , TPD2E2U06-Q1 , TPD2EUSB30 , TPD2S017 , TPD4E001-Q1 , TPD4E004 , TPD4E02B04 , TPD4E05U06 , TPD4E05U06-Q1 , TPD4E101 , TPD4E1B06 , TPD4E1U06 , TPD4E6B06 , TPD5E003 , TPD6E001 , TPD6E004 , TPD6E05U06 , TPD8E003 , TPD8S009 , TVS2200 , UC1611-SP , UC2610 , UC3610 , UC3611 , UC3611M

 

  1.   Trademarks
  2. 1Introduction
  3. 2Definitions
  4. 3S-Parameter Analysis
    1. 3.1 DQA 4-Port Analysis
  5. 4Lower Speed Device Testing
    1. 4.1 ESD Tests
      1. 4.1.1 Test Method and Set-Up
      2. 4.1.2 Evaluation of Test Results
  6. 5Board Layout
  7. 6Schematics and Bill of Materials
    1. 6.1 Schematics
    2. 6.2 Bill of Materials
  8. 7Revision History

4 Lower Speed Device Testing

The lower portion of the board contains footprints for ESD devices that typically are not placed on high speed signal lines. Therefore the best way to test these devices is to access their pins directly to do DC characteristics on them or to strike the individual pins to see what the device can survive. Each pin of each device goes out to the middle of a three test point row. In the row of test points, the outside most hole is connected to the ground plane of the board. The inside most test point is connected to the VCC plane of the board. This provides ease to be able to connect any setup of an ESD diode to its correct functionality. Most ESD diodes will have one or two pins that are ground for the device which with this layout can easily be shorted to ground by shorting the two test points together. In the same vain the ESD diodes with VCC pins can be connected to the correct pin as well.

If it is desired to do ESD testing on the ESD diodes, make sure that the power pins are connected correctly and use the method below to strike the device. After striking if there is a significant change in the leakage, it is safe to assume the device is broken.