SLLS792C June   2007  – December 2024 TRS3221E

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 Specifications
    4. 5.4  Recommended Operating Conditions
    5. 5.5  Thermal Information
    6. 5.6  Electrical Characteristics
    7. 5.7  Driver Section Electrical Characteristics
    8. 5.8  Driver Section Switching Characteristics
    9. 5.9  Receiver Section Electrical Characteristics
    10. 5.10 Receiver Section Switching Characteristics
    11. 5.11 Auto-Powerdown Section Electrical Characteristics
    12. 5.12 Auto-Powerdown Section Switching Characteristics
    13. 5.13 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 Power
      2. 7.3.2 RS232 Driver
      3. 7.3.3 RS232 Receiver
      4. 7.3.4 RS232 Status
    4. 7.4 Device Functional Modes
  9. 8 Application Information Disclaimer
    1. 8.1 Application Information
    2. 8.2 Typical Application
    3. 8.3 Design Requirements
    4. 8.4 Detailed Design Procedure
    5. 8.5 Application Curve
    6.     Power Supply Recommendations
    7. 8.6 Layout
      1. 8.6.1 Layout Guidelines
      2. 8.6.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.3.1 Power

The power block increases, inverts, and regulates voltage at V+ and V– pins using a charge pump that requires four external capacitors. The automatic power-down feature for the driver is controlled by FORCEON and FORCEOFF inputs. The receiver is controlled by the EN input (see Table 7-1 and Table 7-2).

When the device is unpowered, it can be safely connected to an active remote RS232 device.