RS232 to TTL Converter Module – MAX3232 Serial DB9 Adapter

The RS232 to TTL Converter Module is an essential tool for interfacing legacy RS232 serial devices with modern microcontrollers. This compact module is based on the reliable MAX3232CSE IC and efficiently converts RS232 voltage levels to TTL logic levels. It’s perfect for developers working with Arduino, AVR, or PIC microcontrollers who need a dependable serial communication bridge.

Equipped with a standard DB9 female connector, the RS232 to TTL Converter Module supports a wide operating voltage of 3.0V to 5.5V and data rates up to 120kbps. Its small size makes it ideal for embedded systems, development kits, and serial debugging. Whether you’re connecting to an old POS system or configuring embedded firmware, this converter module ensures stable, error-free data transmission.

Thanks to the built-in MAX3232 chip and robust PCB design, the RS232 to TTL Converter Module offers noise-resistant and reliable communication between TTL-level hardware and standard RS232 devices. It’s widely used in industrial automation, sensor interfacing, and embedded applications.

🔧 Key Features

• Signal Conversion: Converts RS232 voltage signals to TTL logic levels
• Stable Transmission: Uses MAX3232 chip for accurate and stable communication
• Standard DB9 Connector: Female DB9 port for compatibility with RS232 devices
• Wide Voltage Support: Operates between 3.0V and 5.5V for use in 3.3V or 5V systems
• Compact Design: Space-saving, lightweight form factor for embedded use
• Versatile Use: Works with Arduino, Raspberry Pi, and other TTL logic devices

📐 Technical Specifications

📌 Applications

• Microcontroller and serial device interfacing
• POS terminals and industrial automation systems
• RS232 communication with Arduino or Raspberry Pi
• Serial debugging and hardware development

💡 Why Choose This Converter?

The RS232 to TTL Converter Module is engineered for seamless signal translation and smooth serial communication. Its compact design, wide voltage support, and robust DB9 interface make it a go-to solution for bridging modern TTL logic with RS232 legacy systems.

📦 Package Includes

• 1 × RS232 to TTL MAX3232 DB9 Adapter Module