JAJSQ37 july   2023 TXV0106-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 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
    6. 6.6 Switching Characteristics, VCCA = 1.8 ± 0.15 V
    7. 6.7 Switching Characteristics, VCCA = 2.5 ± 0.2 V
    8. 6.8 Switching Characteristics, VCCA = 3.3 ± 0.3 V
  8. 7 Parameter Measurement Information
    1. 7.1 Load Circuit and Voltage Waveforms
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Balanced High-Drive CMOS Push-Pull Outputs
      2. 8.3.2 Partial Power Down (Ioff)
      3. 8.3.3 VCC Isolation and VCC Disconnect (Ioff-float)
      4. 8.3.4 Over-Voltage Tolerant Inputs
      5. 8.3.5 Negative Clamping Diodes
      6. 8.3.6 Fully Configurable Dual-Rail Design
      7. 8.3.7 Supports High-Speed Translation
    4. 8.4 Device Functional Modes
  10. 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
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 ドキュメントの更新通知を受け取る方法
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 静電気放電に関する注意事項
    6. 10.6 用語集
  12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Tape and Reel Information
    2. 11.2 Mechanical Data

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

8.3.3 VCC Isolation and VCC Disconnect (Ioff-float)

This device has 2 features (VCC Isolation and VCC Disconnect) which helps in preventing current backflow in case the device is powered down unexpectedly. VCC Isolation: when one of the supplies is kept at (or goes to) zero during normal operation, no current will be consumed by the supply that is maintained. This scenario forces all I/Os to be High-Z. VCC Disconnect: when one of the supplies is left floating (disconnect) after ramping up, the I/Os are forced into High-Z without consuming any current from the maintained supply. In both cases, the I/Os will enter a high-impedance state when either supply (VCCA or VCCB) is <100 mV or left floating, while the other supply is still connected to the device. The following figure shows more information.

The maximum supply current is specified by ICCx, while VCCx is floating, in the Electrical Characteristics. The maximum leakage into or out of any input or output pin on the device is specified by Ioff(float) in the Electrical Characteristics.

GUID-20230626-SS0I-JVNM-GMD9-NBH3GD5RC3NZ-low.svgFigure 8-2 VCC Disconnect and VCC Isolation Feature