SLLS686D October   2005  – July 2024 MAX3221E

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  Electrical Characteristics: Driver
    8. 5.8  Electrical Characteristics: Receiver
    9. 5.9  Electrical Characteristics: Auto-Power Down
    10. 5.10 Switching Characteristics: Driver
    11. 5.11 Switching Characteristics: Receiver
    12. 5.12 Switching Characteristics: Auto-Power Down
    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 RS-232 Driver
      3. 7.3.3 RS-232 Receiver
      4. 7.3.4 RS-232 Status
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 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

Package Options

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

4 Pin Configuration and Functions

MAX3221E DB or PW Package 16-Pin SSOP or TSSOP (Top View) Figure 4-1 DB or PW Package
16-Pin SSOP or TSSOP
(Top View)
Table 4-1 Pin Functions
PIN I/O DESCRIPTION
NAME NO.
C1+ 2 — Positive terminals of the voltage-doubler charge pump capacitors
C2+ 5
C1– 4 — Negative terminals of the voltage-doubler charge pump capacitors
C2– 6
DIN 11 I Driver input
DOUT 13 O RS-232 driver output
EN 1 I Low input enables receiver ROUT output. High input sets ROUT to high impedance.
FORCEOFF 16 I Automatic power-down control input
FORCEON 12 I Automatic power-down control input
GND 14 — Ground
INVALID 10 O Invalid output pin. Output low when RIN input is unpowered.
RIN 8 I RS-232 receiver input
ROUT 9 O Receiver output
VCC 15 — 3V to 5.5V supply voltage
V+ 3 O 5.5V supply generated by the charge pump
V– 7 O –5.5V supply generated by the charge pump