SLLSFS0A April   2024  – May 2025 THVD4421

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  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 Switching Characteristics_Loopback mode
    15. 5.15 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    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 Diagnostic Loopback
      8. 7.3.8 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 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

5.15 Typical Characteristics

THVD4421 RS-485 Termination Resistor vs Temperature
RS-485 Full Duplex mode V(R3-R4) = 2V
Figure 5-1 RS-485 Termination Resistor vs Temperature
THVD4421 Voltage vs Current across R2-R1 Bus Pins with Termination OFF
TERM_TX = GND DIR = GND TA = 25°C
Figure 5-3 Voltage vs Current across R2-R1 Bus Pins with Termination OFF
THVD4421 RS-485 Driver Output Voltage vs Driver Output Current
DIR = VIO TA = 25°C
Figure 5-5 RS-485 Driver Output Voltage vs Driver Output Current
THVD4421 RS-485 Supply Current vs Supply Voltage
TA = 25°C RL = 54Ω DIR = L3 = VIO
RS-485 Full Duplex mode
Figure 5-7 RS-485 Supply Current vs Supply Voltage
THVD4421 RS-485 500kbps Driver Rise or Fall Time vs Temperature
Bus Load = 54Ω ||50 pF SLR = VIO DIR = VIO
Figure 5-9 RS-485 500kbps Driver Rise or Fall Time vs Temperature
THVD4421 RS-485 500kbps Driver Propagation Delay vs Temperature
Bus Load = 54Ω ||50 pF SLR = VIO DIR = VIO
Figure 5-11 RS-485 500kbps Driver Propagation Delay vs Temperature
THVD4421 RS-485 500kbps Supply Current vs Signaling Rate
TA = 25°C RL = 54Ω DIR = VIO
Figure 5-13 RS-485 500kbps Supply Current vs Signaling Rate
THVD4421 RS-232 Supply Current vs Signaling Rate for 250 kbps Mode
TA = 25°C SLR = VIO
Both drivers loaded with 5kΩ ; device in RS-232 2T2R mode
L4 = static L3 toggling
Figure 5-15 RS-232 Supply Current vs Signaling Rate for 250 kbps Mode
THVD4421 RS-232 Receiver Thresholds vs Temperature
Figure 5-17 RS-232 Receiver Thresholds vs Temperature
THVD4421 Termination Resistor vs Bus Common Mode Voltage
RS-485 Full Duplex mode V(R3-R4) = 2V
Figure 5-2 Termination Resistor vs Bus Common Mode Voltage
THVD4421 Voltage vs Current across R2-R1 Bus Pins with Termination ON
TERM_TX = VIO DIR = GND TA = 25°C
Figure 5-4 Voltage vs Current across R2-R1 Bus Pins with Termination ON
THVD4421 RS-485 Driver Differential Output Voltage vs Driver Output Current
DIR = VIO TA = 25°C
Figure 5-6 RS-485 Driver Differential Output Voltage vs Driver Output Current
THVD4421 RS-485 Driver Differential Output Voltage vs Temperature
DIR = L3 = VIO RL = 54Ω
RS-485 Full Duplex mode
Figure 5-8 RS-485 Driver Differential Output Voltage vs Temperature
THVD4421 RS-485 20Mbps Driver Rise or Fall Time vs Temperature
Bus Load = 54Ω || 50pF SLR = GND DIR = VIO
Figure 5-10 RS-485 20Mbps Driver Rise or Fall Time vs Temperature
THVD4421 RS-485 20Mbps Driver Propagation Delay vs Temperature
Bus Load = 54Ω || 50pF SLR = GND DIR = VIO
Figure 5-12 RS-485 20Mbps Driver Propagation Delay vs Temperature
THVD4421 RS-485 20Mbps Supply Current vs Signaling Rate
TA = 25°C RL = 54Ω DIR = VIO
Figure 5-14 RS-485 20Mbps Supply Current vs Signaling Rate
THVD4421 RS-232 Supply Current vs Signaling Rate for 1 Mbps Mode
TA = 25°C SLR = GND
Both drivers loaded with 5kΩ ; device in RS-232 2T2R mode
L4 = static L3 toggling
Figure 5-16 RS-232 Supply Current vs Signaling Rate for 1 Mbps Mode