SLLS686C October   2005  – July 2021 MAX3221E

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  Electrical Characteristics: Driver
    8. 6.8  Electrical Characteristics: Receiver
    9. 6.9  Electrical Characteristics: Auto-Power Down
    10. 6.10 Switching Characteristics: Driver
    11. 6.11 Switching Characteristics: Receiver
    12. 6.12 Switching Characteristics: Auto-Power Down
    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 RS-232 Driver
      3. 8.3.3 RS-232 Receiver
      4. 8.3.4 RS-232 Status
    4. 8.4 Device Functional Modes
  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 Curves
  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

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.4 Device Functional Modes

Table 8-1, Table 8-2, and Table 8-3 show the behavior of the driver, receiver, and INVALID features under all possible relevant combinations of inputs.

Table 8-1 Function Tables Each Driver(1)
INPUTSOUTPUT
DOUT		DRIVER STATUS
DINFORCEONFORCEOFFVALID RIN
RS-232 LEVEL
XXLXZPowered off
LHHXHNormal operation with
auto-power down disabled
HHHXL
LLHYesHNormal operation with
auto-power down enabled
HLHYesL
LLHNoZPowered off by
auto-power down feature
HLHNoZ
(1) H = high level, L = low level, X = irrelevant, Z = high impedance
Table 8-2 Each Receiver(1)
INPUTSOUTPUT
ROUT
RINENVALID RIN
RS-232 LEVEL
LLXH
HLXL
XHXZ
OpenLNoH
(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = disconnected input or connected driver off
Table 8-3 INVALID(1)
INPUTSOUTPUT
RINFORCEONFORCEOFFENINVALID
LXXXH
HXXXH
OpenXXXL
(1) H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected driver off