MAX211EEAI+

Drivers, Receivers, Transceivers Overview

The MAX211EEAI+T is a single-supply RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates four drivers and five receivers within a 28-pin SSOP package, supporting full-duplex communication at data rates up to 120 kbps. The device operates on a single +5V supply (4.5V to 5.5V) utilizing an internal dual charge-pump circuit that requires only four 0.1µF external capacitors. It features ±15kV ESD protection per the Human Body Model and includes shutdown and enable control pins for power management. The EE suffix indicates an industrial temperature range of -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated dual charge-pump voltage converter eliminates the need for external bipolar supplies.
• High electrostatic discharge protection on all RS-232 pins ensures robustness in harsh environments.
• Shutdown and enable control functions allow for significant power reduction and port multiplexing.

Drivers, Receivers, Transceivers Applications

• Battery-powered equipment requiring low standby current
• Hand-held diagnostic devices
• Portable computers with frequent serial connection changes

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature rating. Confirm RoHS compliance status through the supplier's certification documents prior to integration into final assemblies.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring multiple transmit and receive channels within a compact footprint. Ensure the application environment falls within the specified industrial temperature range and that the single +5V supply architecture aligns with the system power budget.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX202E–MAX213E family of RS-232 transceivers designed for single-supply operation. The MAX211 variant specifically provides four drivers and five receivers, distinguishing it from lower-channel counterparts like the MAX202E or MAX232E within the same integrated charge-pump ecosystem.

Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the MAX211EWI+ and MAX211ECWI+. Verify pin compatibility and electrical specifications before substitution.

Drivers, Receivers, Transceivers FAQ

What is the function of the EN pin on the MAX211E?

The EN pin is an active-low receiver enable control. When asserted, it places receiver outputs into a high-impedance state, allowing for wire-OR connections of multiple ports without affecting the drivers or charge pumps.

How does the MAX211E handle unused driver inputs?

The MAX211E includes internal 400kΩ pull-up resistors to VCC on the transmitter inputs. Unused driver inputs can be left unconnected, which forces the corresponding outputs low due to the inversion characteristic of the drivers.

What are the typical supply currents for normal and shutdown modes?

In normal operation, the typical supply current is 14mA to 20mA depending on conditions. In shutdown mode, the supply current reduces significantly to a typical value of 1µA.