Mini MAX3232 RS232 to TTL Converter Module

Mini MAX3232 RS232 to TTL Converter Module is a compact interface module that allows RS232-level signals to be converted to 3.3V/5V TTL logic levels and vice versa. It is widely used for serial communication between microcontrollers and legacy RS232 devices.

Key Features:

• Bidirectional Conversion: Converts RS232 signal levels to TTL and vice versa.
• Low Power Consumption: Uses MAX3232 chip, operates on 3.3V or 5V.
• Compact Size: Miniature form factor ideal for embedded applications.
• Standard DB9 Connector: Easily connects to RS232 serial port.
• Reliable Communication: Supports baud rates up to 120kbps.

Technical Specifications:

• IC Used: MAX3232 (RS232 to TTL logic level converter)
• Voltage Levels: RS232 (±12V typical) to TTL (3.3V or 5V)
• Baud Rate: Up to 120kbps
• Supply Voltage: 3.3V to 5.5V
• Number of Channels: 2 TX and 2 RX

Mechanical Specifications:

• PCB Type: Single-sided FR4 with through-hole and SMD components
• Connectors: DB9 Female RS232 port, 4-pin TTL header
• PCB Color: Blue/Green (varies by manufacturer)

Dimensions:

• Length: Approx. 33mm
• Width: Approx. 17mm
• Height: Approx. 12mm (including connectors)

Mounting Options:

• Can be mounted using double-sided tape, screws, or standoffs
• Ideal for use on breadboards, custom enclosures, or embedded systems

Schematic Diagram, Connection, Wiring and Pinout:

• RS232 DB9: Connects to PC or RS232 device
• TTL Header: VCC, GND, TXD, RXD for microcontroller connection
• TXD (TTL): Connect to RX of MCU
• RXD (TTL): Connect to TX of MCU

Datasheet/User Manual:

• Search “MAX3232 Datasheet PDF” on Google or visit manufacturer’s website

Applications:

• Microcontroller Interface: Connects Arduino, ESP8266, or STM32 to RS232 peripherals
• Serial Debugging: Useful for monitoring serial output from embedded boards
• Legacy Device Communication: Enables new microcontrollers to interface with older RS232 equipment
• Industrial Automation: Serial communication in PLC and control systems

Equivalent:

• SP3232: Compatible alternative with similar electrical performance
• ICL3232: Drop-in replacement for MAX3232
• MAX232: Older 5V-only version with similar RS232 functionality

Package Includes:

• 1 x Mini MAX3232 RS232 to TTL Converter Module