SLLS348P June   1999  – July 2021 MAX3221

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  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics – Power
    6. 6.6  Electrical Characteristics – Driver
    7. 6.7  Electrical Characteristics – Receiver
    8. 6.8  Electrical Characteristics – Status
    9. 6.9  Switching Characteristics – Driver
    10. 6.10 Switching Characteristics – Receiver
    11. 6.11 Switching Characteristics – Status
    12. 6.12 Typical Characteristics
  7. 7 Parameter Measurement Information
    1.     20
  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 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 Support Resources
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DB|16
  • PW|16
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(activelow) features under all possible relevant combinations of inputs.

Table 8-1 Driver(1)
INPUTSOUTPUTDRIVER 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(1)
INPUTSOUTPUTRECEIVER 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(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
GUID-B90E1A72-C2A7-4290-B653-20655085668D-low.gifFigure 8-1 Logic Diagram