MAX3232ECAE-T

Overview

The MAX3232ECAE-T is an automotive-grade RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single 3V 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. It utilizes a dual charge-pump circuit requiring four external capacitors, typically 0.1µF each. The component is housed in a TSSOP-16 (PW) package measuring 5mm x 6.4mm. It functions within a temperature range of -40°C to +85°C and features low standby current.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust performance in vehicle environments
• Integrated dual charge-pump circuit generates required RS-232 voltages using only four small external capacitors
• Provides ±15kV IEC electrostatic discharge protection on serial-port connection pins including ground
• Accepts 5V logic inputs while operating from a 3.3V supply voltage

Applications

• Industrial PCs
• Wired networking equipment
• Data center and enterprise computing systems
• Battery-powered portable devices

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and tape-and-reel specifications. Ensure the component meets the required automotive grade standards if deployed in vehicle applications. Cross-reference the part number with the latest datasheet revision history to validate availability and any potential design changes.

Selection Notes

Select this component when designing systems requiring certified automotive reliability and standard RS-232 communication. It is suitable for interfacing microcontrollers with serial ports where high ESD immunity is critical. Consider the SNx5C3232 as a pin-compatible alternative if higher data rates are needed. Verify that the PCB layout accommodates the necessary external capacitor placement near the charge pump pins.

Part Context

This device belongs to the MAX3232 family of multichannel RS-232 line drivers and receivers. It shares functional similarities with other variants in the series but is specifically qualified for automotive use. The 'E' designation indicates the extended industrial temperature range, while the '-Q1' suffix denotes automotive qualification status under Texas Instruments standards.

Replacement Considerations

The SNx5C3232 is a pin-compatible alternative offering higher speed capabilities up to 1Mbit/s. Catalog versions such as MAX3232E may be used if automotive qualification is not required.