MAX233CPP

Overview

The MAX233CPP is a fully integrated, single-supply RS-232 transceiver designed for EIA/TIA-232E and V.28/V.24 communication interfaces. It operates from a +5V supply and eliminates the need for external charge-pump components or bipolar ±12V supplies through its internal circuitry. The device features two drivers and two receivers in a 20-pin Wide SOIC package. Electrical specifications include a typical data rate of 120kbps, an output voltage swing of ±7.3V under load, and receiver input hysteresis of 0.5V. It supports continuous short-circuit protection on transmitter outputs.

Feature Summary

• Integrated charge pump circuitry enables single +5V supply operation without external capacitors
• Eliminates requirement for bipolar ±12V power supplies
• Includes shutdown mode to reduce power dissipation

Applications

• Interface translation between TTL/CMOS logic and RS-232 levels
• Multidrop RS-232 networks
• Portable diagnostics equipment

Procurement Notes

Verify that the ordering suffix CPP corresponds to the 20-pin Wide SOIC package with a commercial temperature range (0°C to +70°C). Confirm RoHS compliance status as specified in the manufacturer's current documentation. Ensure the component source matches Analog Devices Inc./Maxim Integrated standards.

Selection Notes

Select this part when board space is critical due to the absence of external charge-pump capacitors. It is suitable for applications requiring only two channels of RS-232 communication. Consider alternative family members if higher data rates or additional driver/receiver counts are required.

Part Context

The MAX233CPP belongs to the MAX220–MAX249 family of line drivers and receivers. This family is characterized by low-power shutdown modes and compatibility with standard RS-232 protocols. The specific model integrates the charge pump internally, distinguishing it from variants like the MAX232 that require external capacitors.

Replacement Considerations

Direct substitutes within the same family include the MAX232A, which requires external capacitors. Other compatible devices may include the MAX220 or MAX233CWP, provided the package type and temperature range requirements are met.