MAX211ECWI+

Drivers, Receivers, Transceivers Overview

The MAX211ECWI+ 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 SOIC package, operating at data rates up to 120 kbps. The device requires a +4.5V to +5.5V supply voltage and consumes a typical supply current of 20 mA during normal operation. It features ±15kV ESD protection on all pins and includes shutdown and enable control functions. The commercial temperature range for this specific variant spans from 0°C to +70°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrates dual charge-pump circuitry to generate internal ±10V rails from a single +5V supply, eliminating the need for external bipolar power sources.
• Provides robust ±15kV electrostatic discharge (ESD) protection across all pins, ensuring reliability in harsh environments or frequent connection scenarios.
• Includes dedicated shutdown and enable control pins to minimize power consumption and support port multiplexing through high-impedance receiver states.

Drivers, Receivers, Transceivers Applications

• Battery-powered equipment requiring low-power management
• Hand-held devices with limited space constraints
• Portable diagnostic equipment

Drivers, Receivers, Transceivers Procurement Notes

Verify the suffix 'C' confirms the commercial temperature range (0°C to +70°C), distinct from the extended industrial grade. Confirm the 'W' indicates the 28-pin SOIC package. Ensure the '+' suffix denotes compliance with current environmental standards. Cross-reference the manufacturer part number against official Analog Devices documentation to validate authenticity before integration.

Drivers, Receivers, Transceivers Selection Notes

Select the MAX211ECWI+ when four drivers and five receivers are required for complex serial interfaces. Choose this variant over the EE version if the application operates strictly within the commercial temperature range. Verify that the 28-pin SOIC footprint aligns with the PCB layout requirements. Consider the shutdown functionality if power efficiency is a critical design constraint.

Drivers, Receivers, Transceivers Part Context

This component belongs to the MAX202E–MAX213E family of RS-232 transceivers. These devices share common architecture but differ in driver/receiver counts and package options. The MAX211E specifically offers a high channel count suitable for systems needing multiple serial ports. The ECWI+ designation specifies the commercial temperature grade and surface-mount packaging.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX211EEWI+ serves as a direct functional substitute with identical electrical characteristics, differing only in the extended industrial temperature range (-40°C to +85°C). Other family members like the MAX213E offer similar pinouts but include awake-in-shutdown receivers.