ADM211EARUZ-REEL7

Overview

The ADM211EARUZ-REEL7 is a quad RS-232 transceiver from Analog Devices operating on a single 5 V supply. It features four drivers and five receivers with a guaranteed data rate of 230 kbps. The device includes integrated shutdown and enable control pins, reducing power consumption to 1 μW in shutdown mode. It provides ±15 kV ESD protection compliant with IEC 1000-4-2 standards and meets EMC directives. The component utilizes internal charge pumps requiring only four external 0.1 μF capacitors and is housed in a 28-lead TSSOP package.

Feature Summary

• Complies with EU EMC directive (89/336/EEC) for low emissions and high immunity
• Provides robust ±15 kV ESD protection on all I/O lines per IEC 1000-4-2 standard
• Features dedicated shutdown and enable control pins for precise power management
• Eliminates the need for external TransZorb suppressors through integrated transient protection

Applications

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

Procurement Notes

Verify that the specific ordering suffix corresponds to the required tape-and-reel packaging format. Confirm the component matches the exact 28-lead TSSOP outline dimensions specified in the datasheet. Ensure the revision level aligns with your design requirements before finalizing procurement orders.

Selection Notes

Select this model when a quad driver and five receiver configuration is necessary for complex RS-232 bus topologies. The integrated shutdown feature makes it suitable for battery-operated systems requiring minimal quiescent current. Verify compatibility with existing MAX2xxE designs if a direct upgrade path is desired without schematic changes.

Part Context

This component belongs to the ADM2xxE family of ruggedized RS-232 interface devices manufactured by Analog Devices. The family shares common electrical characteristics and pinout structures, facilitating easy upgrades from older ADM2xx products. The specific variant focuses on providing full duplex communication with enhanced electromagnetic compatibility for harsh environments.

Replacement Considerations

The datasheet identifies the ADM2xxE series as a plug-in upgrade for MAX2xxE devices. Designers replacing legacy components should verify pin-to-pin compatibility and ensure that the new part's voltage levels match the system requirements.

FAQ

How does the shutdown function affect the ADM211E?

In shutdown mode, the charge pump is disabled, all transmitter outputs are turned off, and all receiver outputs are placed in a high impedance state.

What is the typical power consumption in shutdown mode?

Power consumption reduces to approximately 1 μW when the device is in shutdown mode.

Does the ADM211E require external components for voltage generation?

Yes, four external 0.1 μF capacitors are required to support the internal charge pump voltage converter.