MAX3232 RS232 to TTL Serial Port Convertor Module

Description

The MAX3232 TTL-RS232 is an integrated circuit that bridges devices operating at different voltage levels, facilitating smooth data exchange between TTL and RS232 interfaces. It can translate signals between TTL logic levels (5V) and RS232 voltage levels (-25V to +25V) with the help of its dual drivers and receivers. The RS-232 standard requires ± voltage signaling as per the TIA/EIA-232-F specification. With its built-in charge pumps, this module generates the necessary ± voltages for RS-232 communication, allowing the standard to be used over longer distances than TTL serial connections.

Based on the MAX3232 chip, the module can operate at either 3.3V or 5V, ensuring compatibility with various microcontroller setups. Its maximum bit rate of 120Kbit/s enables fast and reliable data transfer. The module’s input receiver voltage range of ± 25V caters to a wide range of RS-232 devices, ensuring compatibility with most equipment.

The 4-pin headers on the module allow for easy interfacing with microcontrollers, providing straightforward connections for transmit (Tx), receive (Rx), ground (GND), and power (Vcc) lines. The module features two LEDs – a red LED indicating transmit activity and a green LED indicating receive action. This visual feedback helps monitor data flow during communication.

The MAX3232 is power-efficient, ideal for various applications, and offers ESD protection for added safety. Its compact package makes it easy to integrate into electronic circuits, and it finds widespread use in serial communication, industrial automation, embedded systems, consumer electronics, and IoT applications.

Feature

• Bridges TTL serial to RS-232 with ± voltage signaling.
• Built-in charge pumps for ± voltage generation.
• Standard DB-9 Female connector for RS-232 connection.
• Supports 3.0V to 5.5V operation.
• Enables longer RS-232 communication distances.
• The maximum bit rate of 120Kbit/s.
• Dual RS-232 channels for connection flexibility.
• LED indicators for transmit and receive activity.
• Easy interface with 4-pin headers.
• Compact with two mounting holes for easy installation.

Application

1. Serial Communication
2. Consumer Electronics
3. Data Logging