MAX232CSE+

Overview

The MAX232CSE+ is a CMOS dual RS-232 transceiver designed for EIA/TIA-232E and V.28/V.24 interfaces. It operates from a single +5V supply, utilizing an internal charge pump to generate the required ±10V levels without external bipolar supplies. The device features two drivers and two receivers supporting full-duplex communication at data rates up to 120kbps. It is housed in a 16-pin SO-Narrow package and functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrates dual charge-pump circuitry to convert a single +5V input into the necessary positive and negative voltages for RS-232 signaling.
• Provides bidirectional level translation between TTL/CMOS logic levels and standard RS-232 voltage swings.
• Supports full-duplex data transmission with independent driver and receiver channels.

Applications

• Interface translation between microcontrollers and RS-232 peripherals
• Multidrop RS-232 network connections
• Portable diagnostic equipment requiring serial communication

Procurement Notes

Verify that the component matches the specific 'C' suffix designation for the 0°C to +70°C operating temperature range. Confirm the 'SE+' suffix indicates the narrow SOIC-16 surface-mount package variant. Ensure the ordering information aligns with the manufacturer's current production status and RoHS compliance requirements before finalizing procurement.

Selection Notes

Select this part when a single +5V power source is available and board space constraints preclude the use of discrete voltage inverters. It serves as a direct replacement for legacy MAX232 designs requiring low-cost RS-232 connectivity. Verify that the 120kbps maximum data rate meets the system's baud rate requirements and that the narrow SOIC footprint fits the PCB layout.

Part Context

This component belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers manufactured by Analog Devices / Maxim Integrated. The MAX232CSE+ specifically represents the commercial-grade version of the classic MAX232 architecture, adapted for surface-mount assembly in a 16-pin SOIC format.

Replacement Considerations

Compatible substitutes include the MAX232A and MAX232EESE+. Note that the MAX232A may have slightly different electrical characteristics, while the EESE+ variant offers an extended industrial temperature range (-40°C to +85°C) and enhanced ESD protection capabilities.