DIYables DIYables RS232 to TTL Level Converter Module MAX3232CSE 3-5V 120Kbps Bidirectional Serial Adapter for Arduino ESP32 Raspberry Pi, 10 Pack
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Quick Overview
This DIYables RS232 to TTL level converter module uses the MAX3232CSE chip for bidirectional RS232 to TTL level conversion, supporting 3V to 5V operation for connecting RS232 devices to modern 3.3V and 5V microcontrollers. It operates from 3V to 5V power supply, making it fully compatible with 3.3V ESP32 and 5V Arduino boards without additional level shifting components.
The module has an ultra-compact 9.4 x 15.9mm board that fits easily into tight enclosures, with a recommended baud rate up to 120Kbps for stable and reliable serial data transfer. It works with Arduino Uno, ESP32, ESP8266, Raspberry Pi, and other serial-capable development boards for RS232 serial communication and data logging applications.
This listing includes 10 RS232 MAX3232CSE TTL converter modules, ideal for industrial serial communication, PLC interfaces, GPS modules, and legacy RS232 device integration projects.
Key Features
- MAX3232CSE RS232 to TTL Converter — Bidirectional RS232 to TTL level conversion for connecting RS232 devices to 3.3V and 5V microcontrollers
- Wide Voltage Range — Operates from 3V to 5V, fully compatible with 3.3V ESP32 and 5V Arduino boards without additional level shifting
- Reliable Serial Data Transfer — Recommended baud rate up to 120Kbps for stable communication
- Ultra-Compact Design — Small 9.4 x 15.9mm board fits easily into tight enclosures
- Universal Platform Support — Works with Arduino Uno, ESP32, ESP8266, Raspberry Pi, and other serial-capable development boards
- Bidirectional Communication — Full-duplex RS232 to TTL serial data transmission
- 10-Pack Value Set — Includes 10 modules for industrial serial communication, PLC interfaces, GPS modules, and legacy RS232 device integration
SPECIFICATION
| Specification | Value |
|---|---|
| Product Type | RS232 to TTL Level Converter Module |
| Chip | MAX3232CSE |
| Operating Voltage | 3V to 5V DC |
| Max Baud Rate | 120Kbps (recommended) |
| Communication Type | Full-duplex bidirectional serial |
| Board Dimensions | 9.4mm x 15.9mm |
| Connector Type | Solder pads (no DB9 connector) |
| Package Quantity | 10 pieces |
| Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi, any UART-capable microcontroller |
| Applications | Industrial serial communication, PLC interfaces, GPS modules, legacy RS232 device integration |
Tutorials
COMPATIBLE HARDWARE
- Arduino boards (UNO, Mega, Nano, etc.) — Hardware Serial or SoftwareSerial
- Arduino Uno R4 WiFi/Minima — Serial communication pins
- ESP32 development boards — UART pins (HardwareSerial)
- ESP8266 boards (NodeMCU, Wemos D1, etc.) — Serial or SoftwareSerial
- Raspberry Pi (all models) — Serial GPIO pins (UART)
- Arduino Nano ESP32 — Hardware Serial pins
- Any microcontroller with UART — Serial communication interface
- Industrial equipment with RS232 — Legacy serial devices
- GPS modules with RS232 — Navigation devices
- PLC systems — RS232 interface integration
