ADM211EARSZ

Overview

The ADM211EARSZ is a robust RS-232 and V.28 interface device manufactured by Analog Devices Inc., operating from a single 5 V power supply. It features four drivers and five receivers with a guaranteed data rate of 230 kbps. The component includes shutdown and enable control pins, achieving a shutdown mode power consumption of 1 μW. It provides ESD protection up to ±15 kV and complies with the EU EMC directive. The device utilizes internal charge pumps requiring four external 0.1 μF capacitors and is housed in a 28-lead SSOP package.

Feature Summary

• Complies with the EU directive on electromagnetic compatibility (EMC) for both emissions and immunity.
• Provides high-level electrostatic discharge protection exceeding ±15 kV on all I/O lines.
• Features a shutdown function that disables the charge pump and all transmitters and receivers.
• Includes an enable pin to tristate receiver outputs for data bus connections.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'ARSZ' against the manufacturer's current documentation to confirm the SSOP-28 package type and lead-free status. Ensure the procurement source provides valid traceability for this Analog Devices part number. Confirm availability through authorized distributors as stock levels fluctuate.

Selection Notes

Select the ADM211EARSZ when a design requires four drivers and five receivers within a single RS-232 transceiver. This model is appropriate for applications needing active shutdown and enable controls to minimize power consumption. It serves as a plug-in upgrade for older MAX2xxE designs while offering enhanced EMC compliance and higher data rates.

Part Context

This component belongs to the ADM2xxE family of ruggedized RS-232 line drivers and receivers. The family shares common specifications regarding EMC compliance and ESD protection but varies in driver/receiver counts and control pin configurations. The ADM211E variant specifically distinguishes itself with full shutdown capability for all transceivers.

Replacement Considerations

The datasheet identifies the ADM2xxE series as a plug-in upgrade for MAX2xxE devices. Designers should verify pinout compatibility and logic level thresholds when substituting older generation transceivers with this component.

FAQ

How does the shutdown mode affect the ADM211E?

In shutdown mode, the ADM211E disables the charge pump, turns off all transmitter outputs, and places all receiver outputs into a high impedance state, reducing power consumption to 1 μW.

What is the purpose of the Enable (EN) pin?

The Enable pin allows the receiver outputs to be tristated. When asserted, it facilitates data bus connections by placing the receiver outputs in a high impedance state.

Does the ADM211E require external components for voltage generation?

Yes, the device requires four external 0.1 μF capacitors to support its internal charge pump, which generates the necessary positive and negative voltages from a single 5 V supply.