SLLS350Q
April 1999 – August 2024
MAX3243
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics –– Auto Power Down
5.6
Electrical Characteristics –– Driver
5.7
Electrical Characteristics –– Receiver
5.8
Switching Characteristics –– Auto Power Down
5.9
Switching Characteristics –– Driver
5.10
Switching Characteristics –– Receiver
5.11
Typical Characteristics
6
Parameter Measurement Information
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Auto-Power-Down
7.3.2
Charge Pump
7.3.3
RS232 Driver
7.3.4
RS232 Receiver
7.3.5
ROUT2B Receiver
7.3.6
Invalid Input Detection
7.4
Device Functional Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Receiving Notification of Documentation Updates
9.2
Support Resources
9.3
Trademarks
9.4
Electrostatic Discharge Caution
9.5
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
1
Features
Operates with 3V to 5.5V V
CC
supply
Single-chip and single-supply interface
for
IBM™
PC/AT™
serial port
RS-232 Bus-pin ESD protection of
±15kV Using Human-Body Model (HBM)
Meets or exceeds the requirements of
TIA/EIA-232-F and ITU V.28 standards
Three drivers and five receivers
Operates up to 250kbit/s
Low active current: 300μA typical
Low standby current: 1μA typical
External capacitors: 4 × 0.1μF
Accepts 5V logic input with 3.3V supply
Always-active noninverting receiver
output (ROUT2B)
Operating temperature
MAX3243C: 0°C to 70°C
MAX3243I: –40°C to 85°C
Serial-mouse driveability
Auto-powerdown feature to disable driver
outputs when no valid RS-232 signal is
sensed