SLLS790D June   2007  – June 2021 TRS3232E

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 ESD Ratings - IEC Specifications
    4. 6.4 Recommended Operating Conditions
    5. 6.5 Thermal Information
    6. 6.6 Electrical Characteristics — Device
    7. 6.7 Electrical Characteristics — Driver
    8. 6.8 Electrical Characteristics — Receiver
    9. 6.9 Switching Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power
      2. 8.3.2 RS232 Driver
      3. 8.3.3 RS232 Receiver
    4. 8.4 Device Functional Modes
      1. 8.4.1 VCC Powered by 3 V to 5.5 V
      2. 8.4.2 VCC Unpowered, VCC = 0 V
  9. 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 Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

9.2 Typical Application

ROUT and DIN connect to UART or general-purpose logic lines. RIN and DOUT lines connect to a RS232 connector or cable. For proper operation, add capacitors as shown in Table 9-1.

GUID-6C8B4B54-E0F2-409E-B581-B13949C009DB-low.gif
C3 can be connected to VCC or GND
Resistor values shown are nominal.
Nonpolorized ceramic capacitors are acceptable. If polarized tantalum or electrolytic capacitors are used, they should be connected as shown.
Figure 9-1 Typical Operating Circuit and Capacitor Values
Table 9-1 VCC vs Capacitor Values
VCCC1C2, C3, C4
3.3 V ± 0.3 V0.1 µF0.1 µF
5 V ± 0.5 V0.047 µF0.33 µF
3 V ± 5.5 V0.1 µF0.47 µF