ADM211EAR-REEL

Overview

The ADM211EAR-REEL is a quad line transceiver from the ADM2xxE family, designed for RS-232 and V.28 interface applications. It operates on a single 5 V power supply with an operating voltage range of 4.5 V to 5.5 V. The device features four drivers and five receivers, supporting data rates up to 230 kbps. It includes shutdown and enable control pins, reducing quiescent current to 1 μW in shutdown mode. ESD protection reaches ±15 kV across all I/O lines. The component is housed in a 28-lead SOIC_W package.

Feature Summary

• Complies with EMC directives including low emissions and high immunity to fast transient bursts.
• Provides robust electrostatic discharge protection on all input and output lines.
• Integrates internal charge pumps requiring only small external capacitors for operation.
• Features dedicated shutdown and enable controls to minimize power consumption.

Applications

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

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging format. The REEL suffix indicates tape-and-reel packaging intended for automated surface-mount assembly processes. Ensure compatibility with existing PCB footprints and reflow soldering profiles specified for the SOIC-28 package variant.

Selection Notes

Select this component when designing systems requiring full duplex RS-232 communication with integrated ESD protection. The inclusion of both shutdown and enable pins allows for flexible power management strategies. Verify that the required data rate does not exceed 230 kbps and that the system operates within the specified 5 V supply voltage constraints.

Part Context

This part belongs to the ADM2xxE series of ruggedized RS-232 transceivers manufactured by Analog Devices. The series shares common architectural features such as single-supply operation and internal charge pumps. Variants within the family differ primarily in the number of receivers and the presence of specific control pins like shutdown or enable functions.

Replacement Considerations

The datasheet identifies the MAX2xxE series as a plug-in upgrade target for this device. Designers migrating from older ADM2xx products should verify pinout compatibility and ensure that external capacitor values meet the minimum requirements for stable charge pump operation.