ADM208EARZ

Overview

The ADM208EARZ is a robust RS-232 line driver and receiver manufactured by Analog Devices Inc. It operates from a single 5 V power supply and features four drivers and four receivers for full-duplex communication. The device supports data rates up to 230 kbps and includes an internal charge pump requiring only four external 0.1 μF capacitors. It provides ±15 kV ESD protection on all I/O lines and complies with EMC directives, eliminating the need for external suppressors. The component is housed in a 24-lead TSSOP package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Complies with EU EMC directive (89/336/EEC) with low EMI emissions and high immunity to fast transient bursts.
• Provides ±15 kV electrostatic discharge protection on all inputs and outputs per IEC 1000-4-2 standards.
• Operates from a single 5 V supply using an internal charge pump with minimal external capacitance requirements.
• Features Schmitt trigger receivers with hysteresis to ensure error-free reception of noisy or slow-transition signals.

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/reel configuration. Ensure compatibility with existing PCB footprints for the 24-lead TSSOP variant. Cross-reference the datasheet revision to confirm pinout consistency if replacing older ADM2xx family components.

Selection Notes

Select this component when designing systems requiring high ESD tolerance and EMC compliance without external suppression circuitry. It is suitable for applications needing four independent RS-232 channels driven by a single 5 V logic supply. Consider the absence of shutdown pins compared to other members of the ADM2xxE family when evaluating power management requirements.

Part Context

The ADM208EARZ belongs to the ADM2xxE family of ruggedized RS-232 transceivers from Analog Devices. This series is designed as a plug-in upgrade for earlier MAX2xxE products, facilitating backward compatibility with legacy designs while offering enhanced performance and reduced component count through integrated charge pumps.

Replacement Considerations

The ADM208EARSZ-REEL1 is a publicly confirmed substitute part number for this component family.

FAQ

Does the ADM208EARZ include shutdown or enable control pins?

No, the ADM208E model does not feature shutdown or enable control pins. These functions are available on other variants in the family, such as the ADM211E and ADM213E.

What is the maximum data rate supported by the ADM208EARZ?

The device guarantees a maximum data rate of 230 kbps under worst-case loading conditions, making it suitable for high-speed modem standards.

How many external capacitors are required for operation?

Only four external 0.1 μF capacitors are required to support the internal charge pump voltage doubler and inverter circuits.