ADM211EARU-REEL7

Overview

The ADM211EARU-REEL7 is a robust RS-232 line transceiver manufactured by Analog Devices Inc. It operates from a single 5 V power supply and supports data rates up to 230 kbps. The device integrates four drivers and five receivers, providing full-duplex communication capabilities. It features an active-high shutdown control pin that disables the charge pump and all transmitters and receivers to minimize power consumption. The component includes ±15 kV ESD protection on all I/O lines and complies with EMC directives. It utilizes internal voltage doubling and inversion circuits requiring only four external 0.1 μF capacitors.

Feature Summary

• Complies with EU EMC directive (89/336/EEC) for low emissions and high immunity
• Provides ±15 kV electrostatic discharge protection on all input and output lines
• Integrates a shutdown mode that reduces power consumption to 1 μW
• Eliminates the need for external TransZorb suppressors through built-in transient protection

Applications

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

Procurement Notes

Verify the specific package type associated with the RU suffix against the manufacturer's official documentation before procurement. Confirm that the reel packaging format meets the requirements of the automated assembly equipment. Ensure the ordering suffix aligns precisely with the required lead frame and tape specifications defined in the datasheet.

Selection Notes

Select this component when designing systems requiring high noise immunity and compliance with strict electromagnetic compatibility standards. The integrated shutdown feature makes it suitable for battery-operated portable devices where minimizing quiescent current is critical. Verify that the system environment requires protection against fast electrical transients and frequent cable plugging.

Part Context

This part belongs to the ADM2xxE family of RS-232 interface devices designed for harsh electrical environments. It serves as a plug-in upgrade for older MAX2xxE series products, facilitating backward compatibility with existing designs. The device represents an enhancement over previous generations by offering improved EMC performance without increasing the external component count.

Replacement Considerations

The ADM211E is functionally compatible with the ADM213E, though the ADM213E maintains two receivers in the shutdown state while the ADM211E disables all receivers. Direct substitution requires verifying the logic polarity differences between the SHDN and EN pins across these variants.