ZHCSIH2C May   2018  – February 2024 ESDS311 , ESDS312 , ESDS314

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings - JEDEC Specifications
    3. 5.3 ESD Ratings - IEC Specifications
    4. 5.4 Recommended Operating Conditions
    5. 5.5 Thermal Information
    6. 5.6 Electrical Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 IEC 61000-4-4 EFT Protection
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Signal Range
        2. 7.2.2.2 Operating Frequency
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 接收文档更新通知
    3. 8.3 支持资源
    4. 8.4 Trademarks
    5. 8.5 静电放电警告
    6. 8.6 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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7.2.1 Design Requirements

A typical operation for the ESDS314 would be protecting a high speed dataline similar to one shown in Figure 7-1. In this example, the ESDS314 is protecting an Ethernet PHY's data lines that has a nominal operating voltage of 3.6V. Many of the Ethernet interfaces that connect to long cables require protection against ±1kV surge test through a 42Ω coupling resistor and a 0.5µF capacitor, equaling roughly 24A of surge current. Without any input protection, if a surge event is caused by lightning, coupling, ringing, or any other fault condition, this input voltage will rise to hundreds of volts for multiple microseconds, harming the device.

For Ethernet 1000Base-T (1Gbps), application design parameters listed in Table 7-1 are known.

Table 7-1 Design Parameters
DESIGN PARAMETERVALUE
Signal range on differential data line pairs0 to 3.6V
Operating frequency125MHz