MAX3232EUE+T

Overview

The MAX3232EUE+T is a low-power, true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates two drivers and two receivers within a 16-pin TSSOP package. The device operates from a single 3V to 5.5V supply and supports data rates up to 250kbit/s. It utilizes a dual charge-pump circuit requiring only four external 0.1µF capacitors to generate the necessary ±10V levels for RS-232 communication. Key electrical parameters include a typical standby current of 300µA, a maximum driver output slew rate of 30V/µs, and an input hysteresis of 0.3V. The component functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual charge-pump circuitry to enable full RS-232 performance using minimal external components
• Provides robust electrostatic discharge protection rated at ±15kV IEC on serial-port connection pins
• Features receiver input hysteresis to enhance signal integrity in noisy environments
• Maintains compatibility with standard TTL logic inputs while supporting 5V logic operation with 3.3V supplies

Applications

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

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and environmental rating. Confirm that the component meets all relevant RoHS compliance requirements for your target market. Ensure that the supplier provides traceability documentation consistent with the original manufacturer's standards. Cross-reference the part number with authorized distributor catalogs to validate authenticity and production status before procurement.

Selection Notes

Select this component when designing systems requiring reliable RS-232 communication with low power consumption. It is suitable for applications where space constraints favor surface-mount packaging over through-hole alternatives. Consider the 250kbit/s data rate limit when evaluating high-speed serial communication needs. Verify that the external capacitor values align with the specific supply voltage used in the design to ensure optimal charge pump performance.

Part Context

This device belongs to the MAX3232 family of RS-232 transceivers, which are widely recognized for their pin compatibility with legacy MAX232 designs. The MAX3232E variant specifically targets industrial and commercial environments with extended temperature ranges. It serves as a bridge between microcontroller UARTs and standard serial connectors, facilitating data exchange in diverse electronic systems without requiring complex external voltage generation circuits.

Replacement Considerations

The SNx5C3232 series is identified as a pin-compatible alternative offering higher speed capabilities up to 1Mbit/s. Designers requiring increased data throughput may consider this substitution while maintaining board layout compatibility.