ADM211EARS-REEL

Overview

The ADM211EARS-REEL is an RS-232 transceiver from the ADM2xxE family, manufactured by Analog Devices Inc. It operates on a single 5 V supply and supports data rates up to 230 kbps. The device integrates four drivers and five receivers within a 28-lead SSOP package. It features ±15 kV ESD protection compliant with IEC 1000-4-2 standards and meets EMC directives including EN 55022. The component includes shutdown and enable control pins, reducing power consumption to 1 μW in shutdown mode. Internal pull-up and pull-down resistors are provided for TTL/CMOS inputs and RS-232 inputs respectively.

Feature Summary

• Complies with EU EMC directive 89/336/EEC for low emissions and high immunity
• Provides robust ESD protection up to ±15 kV on all I/O lines
• Operates from a single 5 V power supply eliminating dual voltage requirements
• Includes dedicated shutdown and enable control pins for power management

Applications

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

Procurement Notes

Verify the specific ordering suffix 'REEL' indicates tape-and-reel packaging when sourcing components. Confirm that the SSOP-28 package variant matches the required footprint for the target PCB design. Ensure compatibility with existing designs by checking pin assignments against the official connection diagram. Validate that the manufacturer documentation confirms the exact part number before finalizing procurement orders.

Selection Notes

Select this component for applications requiring full-duplex RS-232 communication with integrated EMI suppression. The inclusion of both shutdown and enable functions makes it suitable for battery-powered systems needing low standby current. Verify that the 230 kbps maximum data rate meets the system's throughput requirements. Consider the 28-lead SSOP package dimensions during layout planning to ensure adequate clearance and thermal performance.

Part Context

The ADM211EARS-REEL belongs to the ADM2xxE series of ruggedized RS-232 line drivers and receivers. This family is designed as a plug-in upgrade for older MAX2xxE devices, facilitating easy design transitions. The ADM211E specifically distinguishes itself by offering five receiver outputs alongside four driver outputs, providing additional connectivity options compared to standard quad-driver variants.

Replacement Considerations

The ADM211E is backward compatible with earlier ADM2xx products. Designers upgrading from legacy parts should verify pinout compatibility. No direct substitute part numbers are explicitly confirmed in the provided documentation.