ZHCSBM4B September   2013  – August 2015 ISO7142CC

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
  6. 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—5-V Supply
    6. 6.6  Supply Current Characteristics—5-V Supply
    7. 6.7  Electrical Characteristics—3.3-V Supply
    8. 6.8  Supply Current Characteristics—3.3-V Supply
    9. 6.9  Electrical Characteristics—2.7-V Supply
    10. 6.10 Supply Current Characteristics—2.7-V Supply
    11. 6.11 Power Dissipation Characteristics
    12. 6.12 Switching Characteristics—5-V Supply
    13. 6.13 Switching Characteristics—3.3-V Supply
    14. 6.14 Switching Characteristics—2.7-V Supply
    15. 6.15 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Insulation and Safety-Related Specifications
      2. 8.3.2 Regulatory Information
      3. 8.3.3 Safety Limiting Values
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device I/O Schematics
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 PCB Material
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 文档支持
      1. 12.1.1 相关文档　
    2. 12.2 社区资源
    3. 12.3 商标
    4. 12.4 静电放电警告
    5. 12.5 Glossary
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

9 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.

9.1 Application Information

The ISO7142CC device uses single-ended TTL-logic switching technology. The supply voltage range is from 2.7 V to 5.5 V for both supplies, VCC1 and VCC2. When designing with digital isolators, keep in mind that because of the single-ended design structure the single-ended design structure, digital isolators do not conform to any specific interface standard and are only intended for isolating single-ended CMOS or TTL digital signal lines. The isolator is typically placed between the data controller (that is, µC or UART), and a data converter or a line transceiver, regardless of the interface type or standard.

9.2 Typical Application

Figure 15 shows the typical isolated RS-232 interface implementation.

ISO7142CC typ_app_sllsef1.gif Figure 15. Typical Isolated RS-232 Application Circuit for ISO7142

9.2.1 Design Requirements

Unlike optocouplers, which require external components to improve performance, provide bias, or limit current, the ISO7142CC device only requires two external bypass capacitors to operate.

9.2.2 Detailed Design Procedure

Figure 16 shows the hookup of a typical ISO7142CC circuit. The only external components are two bypass capacitors.

ISO7142CC detailed_design_sllsef1.gif Figure 16. Typical ISO7142CC Circuit Hook-up

9.2.3 Application Curves

ISO7142CC eye_diagram_2.7V_sllsef1.gif Figure 17. Typical Eye Diagram at 40 Mbps,
PRBS 216 - 1, 2.7-V Operation
ISO7142CC eye_diagram_5V_sllsef1.gif Figure 19. Typical Eye Diagram at 50 Mbps,
PRBS 216 - 1, 5-V Operation
ISO7142CC eye_diagram_3.3V_sllsef1.gif Figure 18. Typical Eye Diagram at 40 Mbps,
PRBS 216 - 1, 3.3-V Operation