ADM207EARS

Overview

The ADM207EARS is an RS-232 line driver and receiver manufactured by Analog Devices Inc. It operates from a single 5 V power supply and features five drivers and three receivers within a 24-lead SSOP package. The device supports data rates up to 230 kbps and includes internal charge pumps requiring four external 0.1 μF capacitors. It provides ±15 kV ESD protection on all I/O lines, complies with the EU EMC directive (89/336/EEC), and ensures low electromagnetic emissions.

Feature Summary

• Complies with the EU directive on electromagnetic compatibility (EMC) for both emissions and immunity.
• Provides robust electrostatic discharge protection exceeding ±15 kV on all input/output lines.
• Operates from a single 5 V power supply using only four external capacitors.
• Eliminates the need for external TransZorb suppressors due to integrated transient protection.

Applications

• Laptop computers
• Notebook computers
• Printers
• Peripherals
• Modems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status directly with the supplier or official datasheet, as manufacturing revisions may alter environmental declarations. Ensure the component source is authorized to avoid counterfeit parts.

Selection Notes

Select this component when designing systems requiring high-speed RS-232 communication up to 230 kbps in electrically noisy environments. It serves as a direct plug-in upgrade for older MAX2xxE designs without circuit modifications. Choose this part if strict adherence to EU EMC directives and high ESD immunity are required for portable or industrial equipment.

Part Context

The ADM207E belongs to the ADM2xxE family of ruggedized RS-232 interface devices designed for harsh electrical environments. This family shares common architectural features, including single-supply operation and integrated ESD protection. The ADM207E specifically differentiates itself by providing five transmitter channels and three receiver channels within a compact 24-pin footprint.

Replacement Considerations

The ADM207E is backward compatible with earlier ADM2xx products and functions as a plug-in upgrade for MAX2xxE series components. Verify pinout compatibility before substitution. Other members of the ADM2xxE family, such as the ADM206E or ADM208E, offer similar functionality but differ in the number of drivers and receivers.