MAX232EESE+T

Overview

The MAX232EESE+T is a dual RS-232 transceiver designed for single +5V supply operation. It integrates dual charge-pump circuits to generate the required ±10V levels from a single VCC input, eliminating the need for external bipolar supplies. The device features two drivers and two receivers that meet EIA/TIA-232E specifications at data rates up to 120kbps. It provides high electrostatic discharge protection of ±15kV on driver outputs and receiver inputs. The component operates within a temperature range of -40°C to +85°C and utilizes a 16-pin narrow SOIC package.

Feature Summary

• Integrated charge pump circuitry enables single-supply operation without requiring external bipolar voltage sources.
• High electrostatic discharge protection rated at ±15kV Human Body Model on all RS-232 I/O pins.
• Dual driver and dual receiver configuration supports full-duplex communication compliant with EIA/TIA-232E standards.

Applications

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

Procurement Notes

Verify the specific suffix 'ESE' corresponds to the 16-pin Narrow SOIC package and the 'EE' designation confirms the industrial temperature range (-40°C to +85°C). Confirm the '+T' suffix indicates tape-and-reel packaging if reel quantity is required. Ensure the source document explicitly lists this exact part number variant to avoid confusion with standard commercial grade or DIP packages.

Selection Notes

Select this component when designing systems requiring robust ESD protection for frequently connected serial ports. It is suitable for applications where board space is limited due to its integrated charge pump eliminating large external capacitors. Verify that the 120kbps data rate meets system requirements, as higher speeds may require different interface solutions.

Part Context

This device belongs to the MAX202E–MAX213E family of RS-232 transceivers manufactured by Analog Devices (formerly Maxim Integrated). The 'E' suffix denotes enhanced ESD protection compared to non-E versions. The MAX232E variant specifically offers two drivers and two receivers, making it a direct replacement for legacy MAX232 designs while providing improved ruggedness.

Replacement Considerations

Public confirmed substitute part numbers include MAX232EESE and MAX232ECSE. Note that ECSE variants operate in the commercial temperature range (0°C to +70°C), whereas EESE is specified for industrial temperatures (-40°C to +85°C). Ensure thermal requirements are met when substituting between these suffixes.

FAQ

What external components are required for the charge pump?

Four external capacitors are required. For the MAX232E, the datasheet specifies using 1μF capacitors for C1 through C4.

Does the MAX232EESE+T have a shutdown mode?

No, the MAX232E does not feature a shutdown control pin. Only specific members of the family like the MAX241E or MAX213E include shutdown functionality.

What is the maximum data rate supported?

The drivers and receivers meet EIA/TIA-232E specifications at data rates up to 120kbbps when loaded.