MAX232EESE

Overview

The MAX232EESE+ is a dual-channel RS-232 transceiver designed for single +5V supply operation. It integrates charge pump circuitry to generate the required ±10V levels from the single supply, eliminating the need for external bipolar power sources. The device features two drivers and two receivers supporting full-duplex communication at data rates up to 120kbps. It provides high electrostatic discharge protection rated at ±15kV using the Human Body Model. The component operates within an extended industrial temperature range of -40°C to +85°C and is housed in a 16-pin narrow SO package.

Feature Summary

• Integrated charge pump voltage converter enables single-supply operation without requiring external bipolar power rails.
• High ±15kV ESD protection on driver outputs and receiver inputs ensures reliability in harsh environments.
• Dual-driver and dual-receiver architecture supports simultaneous full-duplex serial data transmission.

Applications

• Battery-powered equipment
• Hand-held diagnostic tools
• Portable instrumentation

Procurement Notes

Verify that the specific part number suffix matches the required package type and temperature rating. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations before procurement. Ensure ordering specifications align with the exact functional requirements of the target system design.

Selection Notes

Select this component when designing systems requiring robust RS-232 connectivity powered by a single 5V rail. The integrated charge pump simplifies board layout by removing the need for complex external voltage generation circuits. Verify that the 120kbps data rate meets the application's throughput requirements and that the narrow SO package fits the available footprint constraints.

Part Context

This device belongs to the MAX202E–MAX213E family of RS-232 transceivers manufactured by Analog Devices (formerly Maxim Integrated). The 'E' designation indicates enhanced ESD protection capabilities compared to standard versions. The MAX232 variant specifically offers two drivers and two receivers, making it suitable for basic serial communication interfaces in embedded systems.

Replacement Considerations

Compatible substitutes include other devices from the MAX232 family such as MAX232A or MAX232IP, provided they meet the same electrical and pinout specifications. Ensure any replacement maintains the 16-pin narrow SO package and supports the required operating temperature range for the intended application environment.

FAQ

What external components are required for the MAX232EESE+ to function?

Four external capacitors are required to support the internal charge pump circuitry. These capacitors connect to the V+, V-, C1+, C1-, C2+, and C2- pins to generate the necessary positive and negative voltages for RS-232 signaling.

Does the MAX232EESE+ support low-power shutdown modes?

No, the MAX232EESE does not feature a shutdown control pin. Unlike some other members of the MAX202E-MAX213E family, it operates continuously once powered and cannot be placed into a low-power standby state via a control signal.

How does the MAX232EESE handle electrostatic discharge events?

The device incorporates specialized ESD protection structures on all RS-232 input and output pins. It is rated to withstand ±15kV discharges according to the Human Body Model and ±8kV contact discharges per IEC1000-4-2 standards without sustaining damage.