MAX3232ECUP+T

Overview

The MAX3232ECUP+T is a low-power, true RS-232 transceiver manufactured by Analog Devices Inc./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 only 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 a temperature range of -40°C to +85°C, draws a typical supply current of 0.3mA, and accepts 5V logic inputs while powered by a 3.3V supply. The component is housed in a 16-pin TSSOP (PW) package.

Feature Summary

• Integrated dual charge-pump circuit for generating RS-232 voltage levels from a single low-voltage supply
• Robust electrostatic discharge protection rated at ±15kV on all serial port connection pins
• Low standby current consumption suitable for battery-powered applications
• Pin-compatible design allowing direct replacement for legacy industry-standard RS-232 transceivers

Applications

• Industrial PCs and wired networking equipment
• Data center and enterprise computing systems
• Battery-powered portable devices such as notebooks and palmtop PCs
• Hand-held communication equipment

Procurement Notes

Verify the specific suffix 'CUP' against official manufacturer documentation to confirm package type and tape-and-reel specifications. Ensure the component meets the required automotive or industrial qualification standards if applicable to your system design. Cross-reference the ordering information with the latest datasheet revision to confirm availability and compliance status.

Selection Notes

Select this component when a true RS-232 interface is required from a single 3V or 5V power rail without external inductors. It is appropriate for designs needing high ESD immunity on serial ports. Consider alternative high-speed pin-compatible devices if data rates exceeding 250kbit/s are necessary for the application.

Part Context

This part belongs to the MAX3232 family of multichannel RS-232 line drivers and receivers. The family includes variants with different speed ratings, temperature ranges, and packaging options. The MAX3232E-Q1 variant specifically denotes automotive qualification, while standard catalog versions like MAX3232E offer general-purpose performance.

Replacement Considerations

The SNx5C3232 is a documented pin-compatible alternative offering higher data rates up to 1Mbit/s. Verify electrical characteristics and thermal performance when substituting to ensure compatibility with existing PCB layouts and power constraints.