ADM3232EARNZ-REEL7

Overview

The ADM3232EARNZ-REEL7 is a high-speed, 2-channel RS-232 line driver and receiver designed to operate from a single 3V to 5.5V power supply. This device features enhanced ESD protection on the RS-232 I/O pins, making it a robust interface solution for harsh electrical environments. It utilizes an internal dual charge pump requiring only four small 0.1 uF external capacitors to generate the necessary bipolar RS-232 voltage levels.

Why Choose This Part

The ADM3232EARNZ-REEL7 offers high-level ESD protection meeting IEC 1000-4-2 standards, reducing the need for external protection components. Its ability to maintain a 10 V/us slew rate while drawing only 1.3mA no-load current provides an efficient balance of speed and power consumption. The wide 3.0V to 5.5V operating range ensures compatibility with both legacy 5V logic and modern 3.3V low-power microcontrollers.

Applications

Getting Started

To implement this device, place four 0.1 uF capacitors near the chip to support the internal charge pump. Ensure the SOIC-16 footprint is correctly oriented on your PCB and connect the TTL/CMOS side to your UART TX/RX lines and the RS-232 side to your D-Sub connector. No software configuration is required as the device operates as a transparent physical layer transceiver.

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