ADM202EARW-REEL

Overview

The ADM202EARW-REEL is a dual-channel RS-232 transceiver manufactured by Analog Devices Inc. It operates from a single 5 V power supply (4.5 V to 5.5 V) and supports data rates up to 230 kbps. The device integrates charge-pump circuitry requiring four external 0.1 µF capacitors to generate internal ±10 V rails. It features robust ESD protection rated at ±15 kV for air-gap discharge and ±8 kV for contact discharge, alongside EFT immunity of ±2 kV. The component is housed in a 16-lead Wide SOIC package with an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Compliant with EU EMC directives including EN55022 emissions standards
• Integrated high-voltage protection against electrostatic discharge and electrical fast transients
• Schmitt-trigger receiver inputs with internal pull-down resistors for noise immunity
• Controlled slew rate design to minimize electromagnetic interference

Applications

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

Procurement Notes

Verify the specific ordering suffix 'REEL' indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm that the 'A' grade designation corresponds to the specified industrial temperature range requirements for the target application environment.

Selection Notes

Select this component for applications requiring compliance with strict European EMC regulations without additional shielding. Ensure the design accommodates four external 0.1 µF capacitors for the charge pump. Verify that the system logic levels are compatible with the CMOS input/output specifications provided in the datasheet.

Part Context

This part belongs to the ADM202E/ADM1181A family, serving as a robust upgrade for legacy MAX202E and LT1181A devices. It maintains pin compatibility with older generations while offering enhanced ESD tolerance and lower power consumption through CMOS technology. The wide SOIC package variant provides a space-efficient solution compared to standard PDIP options.

Replacement Considerations

The ADM202E is functionally equivalent to the ADM202JRNZ for general interface tasks, though the latter offers a lower data rate of 120 kbps. For direct upgrades of LTC1181A circuits, the ADM1181A serves as the primary alternative within the same product family.