SLLS792B June   2007  – July 2021 TRS3221E

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
    7. 6.7  Driver Section Electrical Characteristics
    8. 6.8  Driver Section Switching Characteristics
    9. 6.9  Receiver Section Electrical Characteristics
    10. 6.10 Receiver Section Switching Characteristics
    11. 6.11 Auto-Powerdown Section Electrical Characteristics
    12. 6.12 Auto-Powerdown Section Switching Characteristics
    13. 6.13 Typical 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. 8.3.4 RS232 Status
    4. 8.4 Device Functional Modes
  9. 9 Application Information Disclaimer
    1. 9.1 Application Information
    2. 9.2 Typical Application
    3. 9.3 Design Requirements
    4. 9.4 Detailed Design Procedure
    5. 9.5 Application Curve
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

8.4 Device Functional Modes

Table 8-1 Driver
INPUTS(1)OUTPUTDRIVER STATUS
DINFORCEONFORCEOFFVALID RIN RS-232
LEVEL		DOUT
XXLXZPowered off
LHHXHNormal operation with
automatic power down disabled
HHHXL
LLHYesHNormal operation with
automatic power down enabled
HLHYesL
LLHNoZPowered off by
automatic power-down feature
HLHNoZ
(1) H = high level, L = low level, X = irrelevant, Z = high impedance, Yes = |RIN| > 2.7 V, No = |RIN| < 0.3 V
Table 8-2 Receiver
INPUTS(1)OUTPUTRECEIVER STATUS
RINENVALID RIN RS-232
LEVEL		ROUT
XHXZOutput off
LLXHNormal operation
HLXL
OpenLNoH
(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected driver off
Table 8-3 INVALID
INPUTS(1)OUTPUT
RINFORCEONFORCEOFFENINVALID
LXXXH
HXXXH
OpenXXXL
(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected driver off
GUID-8EB031C4-4E13-4A67-902E-B767E5C03C2F-low.gifFigure 8-1 Logic Diagram