JAJSOM1A April   2024  – April 2024 THVD4411

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  ESD Ratings [IEC]
    4. 5.4  Recommended Operating Conditions
    5. 5.5  Thermal Information
    6. 5.6  Power Dissipation
    7. 5.7  Electrical Characteristics
    8. 5.8  Switching Characteristics_RS-485_500kbps
    9. 5.9  Switching Characteristics_RS-485_20Mbps
    10. 5.10 Switching Characteristics, Driver_RS232
    11. 5.11 Switching Characteristics, Receiver_RS232
    12. 5.12 Switching Characteristics_MODE switching
    13. 5.13 Switching Characteristics_RS-485_Termination resistor
    14. 5.14 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 Integrated IEC ESD and EFT Protection
      2. 7.3.2 Protection Features
      3. 7.3.3 Receiver Fail-Safe Operation
      4. 7.3.4 Low-Power Shutdown Mode
      5. 7.3.5 On-chip Switchable Termination resistor
      6. 7.3.6 Operational Data Rate
      7. 7.3.7 Integrated Charge Pump for RS-232
    4. 7.4 Device Functional Modes
      1. 7.4.1 RS-485 Functionality
      2. 7.4.2 RS-232 Functionality
      3. 7.4.3 Mode Control
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Data Rate and Bus Length
        2. 8.2.1.2 Stub Length
        3. 8.2.1.3 Bus Loading
      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 Device Support
    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

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

5.12 Switching Characteristics_MODE switching

Parameters over recommended operating conditions. All typical values are at 25°C and supply voltage of VCC = 5 V , VIO = 3.3 V, unless otherwise noted. 
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
tRDY Time from Shutdown to RS-232 ready MODE1, MODE0 = 00 or floating; SHDN = GND to VIO; rest of logic input pins floating, VCC = 4.5 V to 5.5 V Time from 50% of rising SHDN to charge pump V- supply reaching -8 V; See Figure 6-11  0.05 0.1 ms
MODE1, MODE0 = 00 or floating; SHDN = GND to VIO; rest of logic input pins floating, VCC = 3 V to 3.6 V Time from 50% of rising SHDN to charge pump V- supply reaching -5 V; See Figure 6-11  0.1 0.4 ms
tR2_R4 Time to switch from RS-232 1T1R mode to RS-485 Full duplex mode L2 = Vio, MODE1 from GND to Vio, MODE0 = Vio; SHDN = DIR = VIO; SLR, TERM_TX, TERM_RX= floating; Time from 50% of MODE1 rising edge to R2 reaching 2V; See Figure 6-12  0.04 0.1 µs
tR4_R2 Time to switch from RS-485 full dupplex mode to RS-232 3T5R mode L2 = Vio, MODE1 from Vio to GND, MODE0 = Vio; SHDN = DIR = VIO; SLR, TERM_TX, TERM_RX= floating; Time from 50% of MODE1 falling edge to R2 reaching 300 mV; See Figure 6-12  2 2.1 µs
tFHD_RS485 Time to switch from RS-485 full duplex to half duplex mode DIR= VIO, MODE1 = VIO; MODE0 from VIO to GND ; SHDN = VIO , SLR, TERM_TX, TERM_RX= floating; L2= GND, 10k pull down resistor on L1, Time from 50% of MODE0 falling edge to 50% falling edge on L1; See Figure 6-13  0.5 1 µs
tHFD_RS485 Time to switch from RS-485 half duplex to full duplex mode DIR= VIO, MODE1 = VIO; MODE0 from GND to VIO ; SHDN = VIO , SLR, TERM_TX, TERM_RX= floating; L2= GND, 10k pull down resistor on L1, Time from 50% of MODE0 rising edge to 50% rising edge on L1; See Figure 6-13  0.5 1 µs