MAX243CSE+

Overview

The MAX243CSE+ is a +5V-powered, multichannel RS-232 driver and receiver integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 200kbps. The device features two drivers and two receivers in a 16-pin SOIC package. It includes an internal charge pump that eliminates the need for external bipolar ±12V supplies. The component functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates dual charge-pump DC-DC converters to generate required RS-232 voltages from a single +5V source
• Provides full EIA/TIA-232E compliance with TTL/CMOS-compatible input and output logic levels
• Includes dedicated enable control inputs for managing transmitter and receiver states

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 network communication systems
• Portable diagnostic equipment requiring low-power serial connectivity

Procurement Notes

Verify the specific suffix 'CSE+' against official manufacturer documentation to confirm the commercial temperature grade and SOIC-Narrow-16 packaging. Confirm RoHS compliance status through current datasheets as manufacturing processes may evolve. Ensure the ordering information matches the exact pinout and electrical characteristics defined in the latest public specifications.

Selection Notes

Select this component when designing systems limited to a single +5V power rail without access to negative voltage sources. The integrated charge pump simplifies board layout by reducing external capacitor requirements compared to older generations. Verify that the 200kbps data rate meets the application's throughput needs and that the commercial temperature range aligns with the environmental conditions.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for standard communications interfaces. The MAX243 variant specifically provides two drivers and two receivers. The 'C' designation indicates the commercial temperature range, while 'SE' denotes the 16-pin narrow SOIC package format used in surface-mount applications.

Replacement Considerations

Publicly confirmed substitutes include the MAX243ESE+ and MAX243CWE+. These variants maintain identical functionality but differ in package dimensions or temperature ratings. Verify pin compatibility before implementation.