MAX3232EWE+

Overview

The MAX3232EWE+ is a dual-channel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single 3.0V to 5.5V supply and supports data rates up to 250kbit/s. The device integrates two drivers and two receivers with ±15kV IEC ESD protection on all serial-port connection pins, including ground. It utilizes a dual charge-pump circuit requiring only four external capacitors for operation. The component meets TIA/EIA-232-F and ITU V.28 standards and features low standby current of 300μA typical.

Feature Summary

• Integrates dual charge-pump circuitry enabling true RS-232 performance from a single power supply without negative voltage generation.
• Provides comprehensive ±15kV IEC electrostatic discharge protection across all serial-port connection terminals.
• Supports full-duplex communication with two independent line drivers and two line receivers.
• Accepts 5V logic inputs while operating from a 3.3V supply voltage.

Applications

• Industrial PCs
• Wired networking equipment
• Data center and enterprise computing systems

Procurement Notes

Verify the specific suffix 'WE+' against official manufacturer documentation to confirm package type and environmental compliance status. Confirm availability through authorized distributors as product lifecycle status may vary. Ensure the ordering part number matches the required temperature range and packaging format specified in the latest datasheet revision.

Selection Notes

Select this component when designing interfaces between asynchronous communication controllers and serial-port connectors using 3.3V or 5V logic levels. Verify that the application requires a maximum signaling rate of 250kbit/s and benefits from integrated ESD protection. Ensure the design can accommodate the required four external capacitors for the internal charge pump circuit.

Part Context

This device belongs to the MAX3232 family of low-power RS-232 transceivers. It is designed to provide electrical interface solutions for serial communication applications. The component is widely used in environments requiring robust signal integrity and protection against electrostatic discharge events during serial port connections.

Replacement Considerations

The SNx5C3232 series is identified as a pin-compatible alternative offering higher speed capabilities up to 1Mbit/s. Verify compatibility regarding package dimensions and electrical characteristics before substitution.

FAQ

What is the maximum data signaling rate supported by the MAX3232EWE+?

The device operates at data signaling rates up to 250kbit/s.

How many external capacitors are required for the charge pump circuit?

The device requires four small external capacitors for the dual charge-pump circuit operation.

Does the MAX3232EWE+ include ESD protection?

Yes, it includes ±15kV IEC ESD protection on all serial-port connection pins, including ground.