JAJSS12J April   2004  – April 2024 SN74AVCH8T245

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics
    6. 5.6  Switching Characteristics, VCCA = 1.2V
    7. 5.7  Switching Characteristics, VCCA= 1.5V ± 0.1V
    8. 5.8  Switching Characteristics, VCCA= 1.8V ± 0.15V
    9. 5.9  Switching Characteristics, VCCA= 2.5V ± 0.2V
    10. 5.10 Switching Characteristics, VCCA= 3.3V ± 0.3V
    11. 5.11 Operating Characteristics
    12. 5.12 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Fully Configurable Dual-Rail Design
      2. 7.3.2 Supports High-Speed Translation
      3. 7.3.3 Partial-Power-Down Mode Operation
      4. 7.3.4 Bus-Hold Circuitry
      5. 7.3.5 VCC Isolation Feature
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 ドキュメントの更新通知を受け取る方法
    3. 9.3 サポート・リソース
    4. 9.4 Trademarks
    5. 9.5 静電気放電に関する注意事項
    6. 9.6 用語集
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ（パッケージ｜ピン）
  • DGV|24
  • RHL|24
  • PW|24
サーマルパッド・メカニカル・データ
発注情報

8.3 Power Supply Recommendations

The design of the output-enable (OE) input circuit is referenced to VCCA so that all outputs are placed in the high-impedance state when the OE input is high. To put the outputs in a high-impedance state during power up or power down, the OE input pin must be tied to VCCA through a pullup resistor and must not be enabled until VCCA and VCCB are fully ramped and stable. The current-sinking capability of the driver determines the minimum value of the pullup resistor to VCCA.

VCCA or VCCB can be powered up first. If the SN74AVCH8T245 is powered up in a permanently enabled state
(for example OE is always kept low), then pullup resistors are recommended at the input. Doing this allows for proper, glitch-free, power-up. For more information, see Designing with SN4LVCXT245 and SN74LVCHXT245 Family of Direction Controlled Voltage Translators/Level-Shifters. In addition, the OE pin may be shorted to GND if the application does not require use of the high-impedance state at any time.