Description
The RS232 to TTL Converter is a communication interface module designed to convert RS232 serial signals to TTL-level UART signals and vice versa. It enables seamless communication between computers, PLCs, industrial equipment, and microcontrollers such as Arduino, ESP32, and STM32.
Key Features
• Converts RS232 serial signals to TTL UART levels
• Supports bidirectional data communication
• Compatible with microcontrollers and embedded systems
• Built-in level shifting for reliable signal conversion
• Compact design for easy integration into projects
• Stable data transmission with low signal distortion
• Supports standard UART communication protocols
• Easy connection with DB9 and TTL interfaces
• Low power consumption and high reliability
• Suitable for industrial, automation, and development applications
Specifications
- Product Type: RS232 to TTL Converter Module
- Interface Type: RS232 ↔ TTL UART
- Communication Standard: EIA/TIA RS232
- TTL Logic Level: 3.3V / 5V (model dependent)
- Operating Voltage: 3.3V – 5V DC
- Converter IC: MAX232 / MAX3232 (variant dependent)
- Data Transmission: Full Duplex Serial Communication
- Baud Rate Support: Up to 115200 bps (typical)
- Connector Type: DB9 Connector / Pin Header (variant dependent)
- Signal Lines: TXD, RXD, GND
- Operating Temperature: -20°C to +70°C
- Mounting Type: PCB Module
- Application: Arduino projects, ESP32 systems, PLC communication, serial devices, industrial automation, embedded development systems

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