ZHCSNF0B May   2018  – October 2021 ISOW1412 , ISOW1432

PRODMIX  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. 说明(续)
  6. Device Comparison Table
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  Recommended Operating Conditions
    3. 8.3  Thermal Information
    4. 8.4  Power Ratings
    5. 8.5  Insulation Specifications
    6. 8.6  Safety-Related Certifications
    7. 8.7  Safety Limiting Values
    8. 8.8  Electrical Characteristics
    9. 8.9  Supply Current Characteristics at VISOOUT = 3.3 V
    10. 8.10 Supply Current Characteristics at  VISOOUT = 5 V
    11. 8.11 Switching Characteristics at VISOOUT = 3.3 V
    12. 8.12 Switching Characteristics at VISOOUT = 5 V
    13. 8.13 Insulation Characteristics Curves
    14. 8.14 Typical Characteristics
  9. Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Power Isolation
    3. 10.3 Signal Isolation
    4. 10.4 RS-485
    5. 10.5 Functional Block Diagram
    6. 10.6 Feature Description
      1. 10.6.1 Power-Up and Power-Down Behavior
      2. 10.6.2 Protection Features
      3. 10.6.3 Failsafe Receiver
      4. 10.6.4 Glitch-Free Power Up and Power Down
    7. 10.7 Device Functional Modes
    8. 10.8 Device I/O Schematics
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Data Rate, Bus Length and Bus Loading
        2. 11.2.2.2 Stub Length
        3. 11.2.2.3 Insulation Lifetime
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Documentation Support
      1. 14.1.1 Related Documentation
    2. 14.2 Receiving Notification of Documentation Updates
    3. 14.3 支持资源
    4. 14.4 Trademarks
    5. 14.5 Electrostatic Discharge Caution
    6. 14.6 术语表
  15. 15Mechanical, Packaging, and Orderable Information

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

说明(续)

提供了两个数据速率选项:ISOW1412 针对最大 500kbps 进行了优化,ISOW1432 适合最大 12Mbps 数据速率。除了旁路电容器外,这些器件不需要任何其他外部元件即可实现隔离式 RS-485 端口,非常适合远距离通信。隔离会破坏通信节点之间的接地回路,从而获得更大的共模电压范围。信号和电源路径均按照 UL1577 进行 5kVRMS 隔离,并符合 VDE、TUV、CSA 和 CQC 的增强型和基础型隔离要求。

ISOW14x2 通过将 VIO 和 VDD 一起连接到 PCB 上,可在 3V 至 5.5V 的单一电源下运行。如果需要较低的逻辑电平,1.71V 至 5.5V 逻辑电源 (VIO) 可与 3V 至 5.5V 的电源转换器电源 (VDD) 分开并相互独立。这些器件支持从 –40°C 到 +125°C 的宽工作环境温度范围,并采用 20 引脚 DFM (SOIC-20 尺寸兼容封装)提供至少 8 毫米的爬电距离和间隙。