MAX232BASE+

Overview

The MAX232BASE+ is a +5V-powered, multichannel RS-232 driver and receiver from the MAX220–MAX249 family. It provides two drivers and two receivers for full-duplex communication compliant with EIA/TIA-232E standards. The device operates on a single +5V supply (4.5V to 5.5V) using an internal charge pump to generate ±10V levels. It supports data rates up to 200 kbps with typical propagation delays of 3.5 µs for transmitters and 1 µs for receivers. Operating temperatures range from -40°C to +85°C.

Feature Summary

• Integrates dual charge-pump circuitry to eliminate the need for external bipolar power supplies
• Enables direct interface translation between TTL/CMOS logic levels and RS-232 voltage swings
• Supports standard serial communications protocols including EIA/TIA-232E and V.28/V.24

Applications

• Interface translation for microprocessor-based systems
• Multidrop RS-232 network connections
• Portable diagnostic equipment requiring low-power serial links

Procurement Notes

Verify the specific package suffix and temperature grade against the official Analog Devices ordering information table. Confirm that the component matches the required operating temperature range and pin configuration before integration into the design.

Selection Notes

Select this component when designing circuits limited to a single +5V supply source. Ensure adequate decoupling capacitors are placed near the V+ and V- pins to maintain stable charge-pump operation under load conditions.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers/receivers designed for applications where ±12V supplies are unavailable. The family includes variants with integrated capacitors or shutdown modes to optimize board space and power consumption.

Replacement Considerations

Compatible substitutes within the same family include MAX232A and MAX232CWE, provided they match the required package type and temperature specifications.