ADM202EARW

Overview

The ADM202EARW is a robust, high-speed, dual-channel RS-232/V.28 interface device manufactured by Analog Devices Inc. It operates from a single 5 V power supply and supports data rates up to 230 kbps. The component integrates a charge-pump voltage converter requiring four external 0.1 µF capacitors to generate internal ±10 V supplies. It features ESD protection exceeding ±15 kV on all I/O lines and complies with the EU EMC directive (89/336/EEC). The device utilizes CMOS technology for low power consumption and includes Schmitt-trigger receivers with internal pull-down resistors.

Feature Summary

• Complies with the EU directive on electromagnetic compatibility (EMC) with low emissions.
• Provides robust electrostatic discharge (ESD) protection of ±15 kV on all input/output lines.
• Features integrated charge-pump circuitry enabling operation from a single 5 V supply.
• Includes Schmitt-trigger receiver inputs with internal pull-down resistors for noise immunity.

Applications

• General-purpose RS-232 data links
• Portable instruments
• Personal Digital Assistants (PDAs)

Procurement Notes

Verify the specific package variant against the ordering guide, as the suffix indicates the physical footprint. Confirm RoHS compliance status, as historical revisions may differ. Ensure the source documentation matches the exact part number to validate pinout and electrical specifications before procurement.

Selection Notes

Select this component for applications requiring high-speed RS-232 communication in electrically harsh environments. It serves as a direct upgrade for older MAX202E or ADM232L designs. Consider the TSSOP option if board space is limited, as it is significantly smaller than standard SOIC packages.

Part Context

The ADM202E series represents an enhancement over previous generations like the ADM230–ADM241 family. It offers improved EMC performance and higher data rate capabilities compared to legacy devices. The device is designed to be pin-compatible with many existing RS-232 transceivers, facilitating easy integration into established systems.

Replacement Considerations

The datasheet identifies the ADM202E as a robust pin-compatible upgrade for MAX202E, 232E, and LT1181A. Verify pinout compatibility and operating voltage ranges when substituting these specific legacy components.