MAX3232ECUE+T

Overview

The MAX3232ECUE+T is a low-power, true RS-232 transceiver manufactured by Analog Devices Inc. (formerly Maxim Integrated). It features two drivers and two receivers with a dual charge-pump circuit that enables operation from a single 3V to 5.5V supply using four external 0.1μF capacitors. The device supports data rates up to 250kbit/s and includes ±15kV IEC ESD protection on serial-port connection pins. It operates within an industrial temperature range of -40°C to +85°C and utilizes a 16-pin TSSOP package.

Feature Summary

• Integrated dual charge-pump circuit for generating RS-232 voltage levels from a single low-voltage supply
• Built-in electrostatic discharge protection rated at ±15kV IEC standard on interface pins
• Low standby current consumption suitable for battery-powered applications
• Compatible with 5V logic inputs even when powered by a 3.3V supply

Applications

• Industrial PCs and embedded control systems
• Wired networking equipment and data center infrastructure
• Battery-powered handheld devices and palmtop computers

Procurement Notes

Verify the component origin carefully as Texas Instruments now manufactures this part following its acquisition of Maxim Integrated. Confirm the specific suffix 'E' indicates the extended industrial temperature range (-40°C to +85°C) and 'CUE+' denotes the TSSOP-16 package with lead-free composition. Ensure the datasheet version matches the production batch requirements for your design.

Selection Notes

Select this component when designing systems requiring robust RS-232 communication in electrically noisy environments due to its high ESD tolerance. It is appropriate for space-constrained designs utilizing surface-mount technology. Designers must ensure the power supply remains stable between 3V and 5.5V and include the required external capacitors for the charge pump to function correctly.

Part Context

This device belongs to the MAX3232 family of RS-232 transceivers, which are industry-standard replacements for older MAX232 components. The 'E' suffix specifies the industrial temperature grade, while the 'UE' indicates the TSSOP package type. The '+' suffix confirms compliance with RoHS directives. It serves as a bridge between microcontroller UARTs and legacy serial ports.

Replacement Considerations

The SNx5C3232 series is identified as a pin-compatible alternative offering higher data rates up to 1Mbit/s. For automotive applications, the MAX3232E-Q1 variant provides qualified reliability standards. Standard catalog versions like MAX3232ESE+ are available if tape-and-reel packaging is not required.