Serial Converter RS232 Levels To TTL MAX3232 Breakout

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The MAX3232 Serial RS232 to TTL Level Converter Module, often referred to as a "Breakout" module, is your solution for seamless connectivity between RS232 devices and TTL-based devices, such as Arduino. With a data rate capability of up to 120kbps, this module acts as a reliable bridge for serial signal communication. Notably, it is capable of both sending and receiving serial signals, and it conveniently connects the ground (GND) on both sides of the power supply.



  • Serial to TTL Conversion: This module serves as a reliable converter for electrical levels, facilitating seamless communication between RS232 and TTL devices.
  • Chip Model: The module is built around the MAX3232CSE chip.
  • Voltage Range: It operates within a voltage range of 3.3V.
  • Maximum Baud Rate: Supports data rates of up to 120kbps, making it suitable for various applications.
  • Domestic Chip: Features a domestic MAX3232CSE chip.
  • Compact Size: With dimensions of 9.4mm x 15.9mm, it offers a compact form factor.



  • Driver Output Voltage, Open Circuit: 25V
  • Driver Output Voltage, Loaded: ±5V to ±15V for various loads.
  • Driver Output Resistance, Power Off: 300 ohms.
  • Slew Rate: Ranging from 4V/µs to 30V/µs.
  • Maximum Load Capacitance: Up to 2500pF.
  • Receiver Input Resistance: Between 3kΩ and 7kΩ.
  • Receiver Input Threshold: -3V for Mark (Logic 1) and 3V for Space (Logic 0).