EmbeddedRelated.com
The 2026 Embedded Online Conference
    Parts   Industrial & Automation  Industrial Communication    ADM3232EARNZ
ADM3232EARNZ

ADM3232EARNZ

Analog Devices
Alternative dual driver/receiver RS-232 transceiver from Analog Devices with industrial-temperature variants.
NRND1,995 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ADM3232EARNZ is a high-speed, 2-channel RS-232 line driver and receiver designed to operate from a single 3.0V to 5.5V power supply. It features enhanced ESD protection and utilizes four small 0.1 microfarad external charge pump capacitors to generate the necessary RS-232 voltage levels.

Why Choose This Part

This transceiver offers robust ESD protection meeting IEC 1000-4-2 standards on the RS-232 I/O pins. Its low 1.3mA typical supply current and wide 3V to 5.5V operating range make it suitable for both battery-powered and standard 5V industrial applications.

Applications

Industrial Control Systems
Reliable serial communication between PLCs, HMIs, and motor drives in electrically noisy environments.
Legacy Peripheral Interfacing
Connecting modern 3.3V microcontrollers to legacy RS-232 hardware such as barcode scanners or printers.
Embedded System Debugging
Providing a robust serial console interface for hardware diagnostics and firmware updates.
Telecommunications Equipment
Standardized serial port implementations for networking hardware and base station management.

Getting Started

To integrate this part, place four 0.1 microfarad capacitors close to the charge pump pins as specified in the datasheet layout guidelines. Ensure the logic-side VCC matches your microcontroller's I/O voltage (3.3V or 5V) for proper signal leveling.

Also Consider

MAX3232ESE+T Maxim Integrated / Analog Devices - A widely used industry-standard alternative with similar dual-channel architecture and low power requirements.

Categories

Industrial & Automation > Industrial Communication
The 2026 Embedded Online Conference