The MAX3232 RS232 to TTL Serial Module is a high-speed level shifter that allows a microcontroller (like Arduino, Raspberry Pi, or STM32) to communicate with a standard RS232 serial port on a computer or industrial device. Unlike the older MAX232, this “3232” version is broader in compatibility—it works perfectly with both 3.3V and 5V systems, making it a must-have for modern IoT developers working with the ESP32.
Key Features
Dual Voltage Support: Works seamlessly with 3.3V (modern MCUs) and 5V (traditional Arduino) logic levels.
Integrated DB9 Port: Comes with a pre-soldered Female DB9 connector for direct connection to serial cables.
High Data Rates: Supports baud rates up to 250kbps, ensuring smooth data transmission for logs and commands.
Compact & Reliable: Uses the industry-standard MAX3232 IC, known for its stability and low power consumption.
Plug-and-Play: Requires only 4 pins (VCC, GND, TX, RX) to interface with your microcontroller.
Technical Specifications
Feature
Specification
Chipset
MAX3232CSE
Input Interface
DB9 Female (RS232 Level)
Output Interface
4-Pin Header (TTL Level)
Operating Voltage
3.0V to 5.5V DC
Max Baud Rate
250 kbps
Dimensions
31.7mm x 33mm (including connector)
Pins
VCC, GND, TXD, RXD
Weight
2000 g
Dimensions
15 × 10 × 5 cm
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