JAJSDS3C September   2017  – December 2018 THVD1510 , THVD1512 , THVD1550 , THVD1551 , THVD1552

PRODUCTION DATA.  

  1. 特長
  2. アプリケーション
  3. 概要
    1.     Device Images
      1.      THVD1510およびTHVD1550の概略回路図
      2.      THVD1551の概略回路図
      3.      THVD1512およびTHVD1552の概略回路図
  4. 改訂履歴
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1.     Pin Functions
    2.     Pin Functions
    3.     Pin Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Power Dissipation
    6. 7.6 Electrical Characteristics
    7. 7.7 Switching Characteristics
    8. 7.8 Switching Characteristics
    9. 7.9 Typical Characteristics
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagrams
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
      1. 9.4.1 Device Functional Modes for THVD1510 and THVD1550
      2. 9.4.2 Device Functional Modes for THVD1551
      3. 9.4.3 Device Functional Modes for THVD1512 and THVD1552
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
        1. 10.2.1.1 Data Rate and Bus Length
        2. 10.2.1.2 Stub Length
        3. 10.2.1.3 Bus Loading
        4. 10.2.1.4 Receiver Failsafe
        5. 10.2.1.5 Transient Protection
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13デバイスおよびドキュメントのサポート
    1. 13.1 デバイス・サポート
    2. 13.2 デベロッパー・ネットワークの製品に関する免責事項
    3. 13.3 関連リンク
    4. 13.4 ドキュメントの更新通知を受け取る方法
    5. 13.5 コミュニティ・リソース
    6. 13.6 商標
    7. 13.7 静電気放電に関する注意事項
    8. 13.8 Glossary
  14. 14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

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)
  • D|14
  • DGS|10
サーマルパッド・メカニカル・データ
発注情報

Layout Guidelines

Robust and reliable bus node design often requires the use of external transient protection devices in order to protect against surge transients that may occur in industrial environments. Since these transients have a wide frequency bandwidth (from approximately 3 MHz to 300 MHz), high-frequency layout techniques should be applied during PCB design.

  1. Place the protection circuitry close to the bus connector to prevent noise transients from propagating across the board.
  2. Use VCC and ground planes to provide low inductance. Note that high-frequency currents tend to follow the path of least impedance and not the path of least resistance.
  3. Design the protection components into the direction of the signal path. Do not force the transient currents to divert from the signal path to reach the protection device.
  4. Apply 100-nF to 220-nF decoupling capacitors as close as possible to the VCC pins of transceiver, UART and/or controller ICs on the board.
  5. Use at least two vias for VCC and ground connections of decoupling capacitors and protection devices to minimize effective via inductance.
  6. Use 1-kΩ to 10-kΩ pullup and pulldown resistors for enable lines to limit noise currents in these lines during transient events.
  7. Insert pulse-proof resistors into the A and B bus lines if the TVS clamping voltage is higher than the specified maximum voltage of the transceiver bus pins. These resistors limit the residual clamping current into the transceiver and prevent it from latching up.
  8. While pure TVS protection is sufficient for surge transients up to 1 kV, higher transients require metal-oxide varistors (MOVs) which reduce the transients to a few hundred volts of clamping voltage, and transient blocking units (TBUs) that limit transient current to less than 1 mA.