ADM208EARUZ

Overview

The ADM208EARUZ is a robust RS-232 line driver and receiver manufactured by Analog Devices Inc. It operates from a single 5 V power supply and supports data rates up to 230 kbps. The device features four drivers and four receivers, providing full-duplex communication capabilities. It includes integrated ESD protection rated at ±15 kV for human body model and air-gap discharge, ensuring compliance with IEC 1000-4-2 standards. The component utilizes a TSSOP-24 surface-mount package and requires four external 0.1 μF capacitors for its internal charge pump voltage converter.

Feature Summary

• Complies with the EU directive on electromagnetic compatibility (EMC) including low EMI emissions.
• Provides high-level electrostatic discharge protection on all I/O lines exceeding ±15 kV.
• Operates from a single 5 V power supply eliminating the need for dual polarity supplies.
• Features Schmitt trigger inputs on receivers to ensure error-free reception of noisy signals.

Applications

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

Procurement Notes

Verify the specific ordering suffix RUZ corresponds to the TSSOP-24 package configuration before procurement. Confirm that the required external capacitors are included in the bill of materials, as they are not integrated within the IC. Ensure design compatibility with existing PCB footprints for the 24-lead thin-shrink small-outline package.

Selection Notes

Select this component when a four-channel RS-232 interface is required without shutdown control functionality. Compare against the ADM206E if only three receivers are needed or the ADM211E if shutdown capability is necessary. Verify that the 230 kbps maximum data rate meets the system's transmission speed requirements.

Part Context

The ADM208EARUZ belongs to the ADM2xxE family of ruggedized RS-232 transceivers designed for harsh electrical environments. This series serves as a plug-in upgrade for earlier MAX2xxE products, facilitating backward compatibility with older designs while offering enhanced EMC performance and ESD protection levels.

Replacement Considerations

The ADM208EARSZ-REEL1 is a publicly confirmed substitute part number within the same product family, offering identical functional specifications but packaged in a reel format rather than tube packaging.

FAQ

Does the ADM208EARUZ include a shutdown mode?

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

What is the input logic threshold range for the receivers?

The receiver input threshold low is guaranteed between 0.8 V and 1.3 V, while the input threshold high is between 2.0 V and 2.4 V.

How many external capacitors are required for operation?

Four external 0.1 μF capacitors are required to support the internal charge pump voltage converter, which generates the positive and negative supply voltages from the single 5 V input.