MAX220CPE+

Overview

The MAX220CPE+ is a dual RS-232 line driver and receiver integrated circuit designed for EIA/TIA-232E communications interfaces. It operates from a single +5V supply by utilizing an internal charge pump to generate the required ±10V voltages, eliminating the need for external bipolar supplies. The device features two drivers and two receivers in a 16-pin PDIP package with an industrial temperature range of 0°C to +70°C. Electrical specifications include a typical data rate of 120 kbps, transmitter output voltage swings of ±8V, and receiver input thresholds compatible with TTL/CMOS logic levels.

Feature Summary

• Integrated charge pump circuitry eliminates the requirement for external components or bipolar power supplies
• Enables single-supply operation directly from a +5V source
• Provides shutdown mode functionality to minimize power consumption

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 communication networks
• Portable diagnostic equipment requiring low power consumption

Procurement Notes

Verify the specific suffix 'CPE+' against the manufacturer's current ordering information to confirm the package type, lead-free status, and operating temperature range. Ensure that the required external capacitors match the datasheet recommendations for stable charge pump operation at the target data rates.

Selection Notes

Select this component when board space is limited and a bipolar power supply is unavailable. Compare propagation delays and slew rates against other family members if higher data rates are required. Verify that the external capacitor values align with the specific electrical characteristics needed for the application environment.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. The family offers various channel counts and control configurations, ranging from simple dual-driver units to complex octal-channel devices with individual enable controls.

Replacement Considerations

Direct replacements within the same family include the MAX232CPE+ and MAX233CPE+. Verify pin compatibility and ensure that the alternative part supports the required single-supply charge pump architecture if external components are not permitted.