MAX3232 TTL to RS-232 Interface Module — 3.3V / 5V

MAX3232 TTL to RS-232 Interface Module — 3.3V / 5V

The MAX3232 TTL to RS-232 interface module converts between 3.3V/5V TTL serial (UART) and RS-232 voltage levels (±12V), enabling Arduino and microcontrollers to communicate with RS-232 serial devices such as industrial equipment, PLCs, barcode scanners, and legacy computers. Features a DB9 connector for standard RS-232 cable connection.

Key Specifications

• IC: MAX3232 | Conversion: TTL (3.3V/5V) ↔ RS-232 (±12V)
• Channels: 2 TX + 2 RX | Data rate: up to 250kbps
• Supply voltage: 3.3–5V | Connector: DB9 female
• Compliance: RoHS compliant

Why Choose This?

• ✅ 3.3V and 5V compatible — works with Arduino Uno, ESP32 and Raspberry Pi
• ✅ DB9 connector — standard RS-232 cable connection
• ✅ Industrial RS-232 compatibility — connect to PLCs, barcode scanners and legacy equipment
• ✅ Compact module — minimal footprint for embedded RS-232 interfaces

Typical Applications

• Arduino to RS-232 industrial equipment communication
• PLC and SCADA serial interface
• Barcode scanner and label printer connection
• Legacy RS-232 device interfacing

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