ADM211EARUZ-REEL

Overview

The ADM211EARUZ-REEL is a robust 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 shutdown and enable control pins to minimize power consumption. It provides ±15 kV ESD protection on all I/O lines and complies with EMC directives. The component is housed in a 28-lead TSSOP package and requires four external 0.1 μF capacitors for the charge pump.

Feature Summary

• Complies with EU EMC directive (89/336/EEC) for low emissions and high immunity
• Provides ±15 kV ESD protection on all I/O lines per IEC 1000-4-2 standards
• Features shutdown mode that disables the charge pump and all transmitters/receivers
• Includes enable control pin to tristate receiver outputs

Applications

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

Procurement Notes

Verify the ordering suffix REEL indicates tape-and-reel packaging. Confirm the RU designation corresponds to the TSSOP-28 package variant. Ensure the component meets RoHS compliance requirements for your specific manufacturing process. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm availability and revision status.

Selection Notes

Select this model when a single 5 V supply operation is required alongside full shutdown capability. The ADM211E differs from the ADM213E by disabling all receivers during shutdown rather than keeping two active. Verify that the 28-lead TSSOP package fits the PCB layout constraints. Ensure the design accommodates the four external capacitors needed for the internal charge pump circuitry.

Part Context

This component 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. The ADM211E specifically offers full shutdown functionality, distinguishing it from variants like the ADM207E which lack control pins. It is backward compatible with earlier ADM2xx designs.

Replacement Considerations

ADM213EARZ

FAQ

How does the shutdown function affect the ADM211E?

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

What is the purpose of the Enable pin?

The Enable pin allows the user to disable the receiver outputs, placing them in a high impedance state while leaving the transmitters operational.

Does the ADM211E require external components for voltage generation?

Yes, it requires four external 0.1 μF capacitors to support the internal charge pump that generates the necessary positive and negative voltages.