MAX232ECSE

Overview

The MAX232ECSE is a dual driver/receiver RS-232 transceiver from the MAX202E–MAX213E family, manufactured by Analog Devices/Maxim Integrated. It operates on a single +4.5V to +5.5V supply and includes an integrated charge pump to generate internal ±10V levels, eliminating the need for external bipolar supplies. The device provides full-duplex communication with two drivers and two receivers, supporting data rates up to 120kbps. It features high ESD protection of ±15kV (HBM) and operates within a commercial temperature range of 0°C to +70°C. The ECSE suffix indicates a narrow SOIC-16 package.

Feature Summary

• Integrated charge pump circuitry enables operation from a single +5V supply without requiring external bipolar voltage sources.
• High electrostatic discharge protection rated at ±15kV Human Body Model ensures reliability in harsh environments.
• TTL and CMOS compatible input thresholds allow direct interfacing with standard logic families.

Applications

• Battery-powered equipment
• Hand-held equipment
• Portable diagnostics equipment

Procurement Notes

Verify the specific ordering suffix 'ECSE' corresponds to the narrow SOIC-16 package and the 0°C to +70°C commercial temperature range. Confirm that the component is sourced from authorized distributors to ensure authenticity, as counterfeit RS-232 transceivers may exhibit degraded ESD performance or incorrect electrical characteristics compared to the official datasheet specifications.

Selection Notes

Select this part when board space is limited and a single +5V supply is available, as it integrates the charge pump capacitors externally but eliminates the need for negative voltage rails. Choose the ECSE variant specifically for narrow surface-mount applications. Note that unlike the MAX203E or MAX205E, this device requires four external capacitors for the charge pump circuit.

Part Context

The MAX232ECSE belongs to the MAX202E–MAX213E family of RS-232 transceivers designed for EIA/TIA-232E and V.28/V.24 interfaces. This family distinguishes itself from standard non-E versions by offering enhanced ±15kV ESD protection, making it suitable for applications where frequent connection changes occur. The MAX232 variant specifically provides two drivers and two receivers, serving as a standard interface solution for serial communications.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.