# MAX3232 mini RS232 to TTL MCU converter module

> RS232 to TTL converter module based on the MAX3232 chip, providing bidirectional communication between a PC/laptop RS232 port and a microcontroller's UART TTL interface. Supply voltage 3.0V-5.5V DC, RS232 voltage up to 15V DC, transfer speed up to 120 kbps, low power consumption. PCB dimensions 50 x 40 mm. Suitable for prototyping, robots and educational applications.

- Page: https://sigmanortec.ro/en/max3232-mini-rs232-to-ttl-mcu-converter-module
- Price: 2.96 RON
- Availability: In stock; 1-2 zile
- Reference: 22185 · EAN: 5944067364710
- Category: Mechatronics and IoT > Serial and CAN Converters
- Package (shipping data): 0.001 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:37 (Europe/Bucharest)

## Description

The RS232 to TTL converter enables communication between the RS232 port of a PC or laptop and the TTL UART of microcontroller projects, offering stable bidirectional conversion based on the MAX3232 chip. It operates at 3.0V–5.5V, supports transfer rates up to 120 kbps, has low power consumption and is suitable for prototyping, robotics and educational applications.
The RS232 to TTL converter module is designed to enable communication between the RS232 interface of a PC or laptop and the 3.0V–5.5V TTL logic used in microcontrollers and various electronic projects. The converter is bidirectional, meaning RS232 signals are converted to TTL and vice versa. It is ideal for microcontroller projects, interfacing computers with logic circuits, robots, or educational and experimental applications.
The module is based on the MAX3232 chip, known for stability and high transmission speed up to 120 kbps. It is easily powered with voltages between 3.0V and 5.5V and has low power consumption.
Specifications:
Chip: MAX3232
Power supply voltage: 3.0V – 5.5V DC (TTL)
RS232 voltage: Up to 15V DC
Transfer speed: up to 120 kbps
Supports PC/Laptop RS232 interface and 5V TTL microcontroller UART
PCB dimensions: 50 x 40 mm
Usage:
Connect the module's power supply to the (+ and -) pins.
Connect the TXD and RXD pins accordingly between the RS232 device and the TTL device.
Check the correct polarity of the power supply before use.