ADM202EARNZ

Overview

The ADM202EARNZ is a dual-channel RS-232 line driver and receiver manufactured by Analog Devices. It operates from a single +5 V power supply with a voltage range of 4.5 V to 5.5 V. The device supports data rates up to 230 kbps and includes internal charge-pump circuitry requiring four external 0.1 µF capacitors. It features ±15 kV ESD protection on all I/O lines, complying with IEC1000-4-2 standards. The component is housed in a 16-lead SOIC package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Complies with EU EMC directive 89/336/EEC for low emissions and high immunity
• Provides robust protection against electrostatic discharge and electrical fast transients
• Utilizes CMOS technology to minimize power dissipation for portable applications
• Offers pin-compatible upgrade for legacy ADM202, MAX202E, and LT1181A devices

Applications

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

Procurement Notes

Verify the specific ordering suffix to confirm the package type and tape-and-reel quantity. Ensure the procurement documentation matches the required industrial temperature grade and RoHS compliance status. Cross-reference the manufacturer part number with official Analog Devices catalogs to confirm current production status and availability.

Selection Notes

Select this component when designing systems requiring high-speed RS-232 communication at 230 kbps with strict electromagnetic compatibility requirements. It is suitable for harsh electrical environments where frequent cable plugging occurs. Consider the TSSOP option if board space is limited, as it offers a smaller footprint compared to standard SOIC packages.

Part Context

The ADM202E is part of the ADM202 series, designed as a robust enhancement to older RS-232 transceivers. It serves as a direct replacement for parts like the ADM232L and MAX202E. The device integrates voltage doubling and inversion circuits, eliminating the need for external dual supplies while maintaining full EIA/TIA-232-E specification compliance.

Replacement Considerations

Public confirmed substitute part numbers include ADM202JRNZ and ADM202EARUZ.