MAX232CSE+T

Overview

The MAX232CSE+T is a +5V-powered, multichannel RS-232 driver/receiver manufactured by Analog Devices/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 for full-duplex communication. It utilizes an internal charge pump circuitry requiring four external capacitors (typically 1.0µF) to generate the necessary ±10V levels from a single +5V supply. The component is housed in a 16-pin Wide SO package and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates dual charge-pump DC-DC converters to eliminate the need for external bipolar ±12V power supplies.
• Enables single-supply operation using only a +5V source while maintaining standard RS-232 output voltage swings.
• Provides full-duplex signal translation between TTL/CMOS logic levels and RS-232 standards.

Applications

• Interface translation for EIA/TIA-232E and V.28/V.24 communications interfaces
• Multidrop RS-232 network connections
• Portable diagnostics equipment

Procurement Notes

Verify that the ordering suffix matches the specific package and temperature grade required for the design. Confirm the presence of the '+' designation indicates lead-free compliance. Ensure the supplier provides valid traceability documentation for the Analog Devices/Maxim Integrated manufacturer origin.

Selection Notes

Select this component when board space constraints allow for four external capacitors but bipolar supplies are unavailable. Compare against the MAX232A variant if tighter electrical specifications or different control pin configurations are needed. Verify that the 16-pin Wide SO footprint aligns with the PCB layout requirements.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for applications where ±12V supplies are not available. The MAX232 serves as a foundational model in this series, establishing the architecture for single-supply RS-232 transceivers used in industrial and consumer electronics.

Replacement Considerations

The MAX232A is a direct functional replacement within the same family. Other variants such as the MAX232CWE offer alternative packaging options.