JAJSGE1A October   2018  – October 2019 ISO1042-Q1

PRODUCTION DATA.  

  1. 特長
  2. アプリケーション
  3. 概要
    1.     アプリケーション図
  4. 改訂履歴
  5. Pin Configuration and Functions
    1.     Pin Functions—16 Pins
    2.     Pin Functions—8 Pins
  6. Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Transient Immunity
    4. 6.4  Recommended Operating Conditions
    5. 6.5  Thermal Information
    6. 6.6  Power Ratings
    7. 6.7  Insulation Specifications
    8. 6.8  Safety-Related Certifications
    9. 6.9  Safety Limiting Values
    10. 6.10 Electrical Characteristics - DC Specification
    11. 6.11 Switching Characteristics
    12. 6.12 Insulation Characteristics Curves
    13. 6.13 Typical Characteristics
  7. Parameter Measurement Information
    1. 7.1 Test Circuits
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 CAN Bus States
      2. 8.3.2 Digital Inputs and Outputs: TXD (Input) and RXD (Output)
      3. 8.3.3 Protection Features
        1. 8.3.3.1 TXD Dominant Timeout (DTO)
        2. 8.3.3.2 Thermal Shutdown (TSD)
        3. 8.3.3.3 Undervoltage Lockout and Default State
        4. 8.3.3.4 Floating Pins
        5. 8.3.3.5 Unpowered Device
        6. 8.3.3.6 CAN Bus Short Circuit Current Limiting
    4. 8.4 Device Functional Modes
  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
        1. 9.2.2.1 Bus Loading, Length and Number of Nodes
        2. 9.2.2.2 CAN Termination
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 PCB Material
    2. 11.2 Layout Example
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 ドキュメントのサポート
      1. 12.1.1 関連資料
    2. 12.2 ドキュメントの更新通知を受け取る方法
    3. 12.3 コミュニティ・リソース
    4. 12.4 商標
    5. 12.5 静電気放電に関する注意事項
    6. 12.6 Glossary
  13. 13メカニカル、パッケージ、および注文情報

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

Undervoltage Lockout and Default State

The supply pins have undervoltage detection that places the device in protected or default mode which protects the bus during an undervoltage event on the VCC1 or VCC2 supply pins. If the bus-side power supply, VCC2, is less than about 4 V, the power shutdown circuits in the ISO1042-Q1 device disable the transceiver to prevent false transmissions because of an unstable supply. If the VCC1 supply is still active when this occurs, the receiver output (RXD) goes to a default HIGH (recessive) value. Table 2 summarizes the undervoltage lockout and fail-safe behavior.

Table 2. Undervoltage Lockout and Default State

VCC1 VCC2 DEVICE STATE BUS OUTPUT RXD
> UVVCC1 > UVVCC2 Functional Per Device State and TXD Mirrors Bus
<UVVCC1 > UVVCC2 Protected Recessive Undetermined
>UVVCC1 < UVVCC2 Protected High Impedance Recessive (Default High)

NOTE

After an undervoltage condition is cleared and the supplies have returned to valid levels, the device typically resumes normal operation in 300 µs.