MAX3232EETE+T

Overview

The MAX3232EETE+T is a dual driver and receiver 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 a dual charge-pump circuit requiring four external 0.1μF capacitors to generate the necessary ±9V levels for RS-232 signaling. It provides full duplex communication with two drivers and two receivers, featuring ±15kV IEC ESD protection on all serial-port connection pins. The component is housed in a TQFN-EP-16 package.

Feature Summary

• Integrates dual charge-pump circuitry to enable operation from a single low-voltage power supply without requiring negative voltage rails.
• Provides comprehensive electrostatic discharge protection rated at ±15kV IEC standards across all serial port interface pins.
• Delivers true RS-232 signal levels while maintaining pin-to-pin compatibility with industry-standard MAX232 devices.

Applications

• Industrial PCs
• Wired networking equipment
• Battery-powered portable systems

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm the exact package type and reel specifications. Confirm that the component meets the required environmental standards and lead-free compliance for your manufacturing process before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring robust RS-232 connectivity powered by a single 3V or 5V rail. Ensure the design accommodates the four required external charge-pump capacitors and verify that the 250kbit/s maximum data rate satisfies the application's throughput requirements.

Part Context

This part belongs to the MAX3232E family of low-power RS-232 transceivers. It shares functional similarities with other variants in the series but is distinguished by its specific TQFN-EP-16 surface-mount packaging configuration designed for compact board layouts.

Replacement Considerations

The SNx5C3232 is identified as a high-speed pin-compatible alternative within the same product ecosystem. Verify electrical parameter alignment before substitution.

FAQ

Does the MAX3232EETE+T require a negative voltage supply?

No, the device utilizes an internal dual charge-pump circuit to generate the necessary negative voltage levels from a single positive supply ranging from 3V to 5.5V.

What is the maximum data signaling rate supported by this transceiver?

The device supports data signaling rates up to 250kbit/s under standard operating conditions.

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

Four small external capacitors, typically 0.1μF each, are required to support the dual charge-pump circuit.