MAX232CWE

Overview

The MAX232CWE is a dual driver and receiver RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply, utilizing internal charge pumps to generate the required ±10V levels for EIA/TIA-232E communication. The device features two drivers and two receivers with full-duplex capability. It supports data rates up to 120 kbps and includes integrated hysteresis for noise immunity. The component is housed in a 16-pin Wide SOIC package and is rated for an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates dual charge-pump circuits to convert a single +5V supply into the necessary positive and negative voltages for RS-232 signaling, eliminating the need for external bipolar power sources.

Applications

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

Procurement Notes

Verify the specific suffix 'CWE' against official manufacturer documentation to confirm the exact package type (Wide SOIC) and commercial temperature rating (0°C to +70°C). Ensure that the ordering information matches the current product status and availability as listed in the distributor's catalog.

Selection Notes

Select this component when designing systems that require standard RS-232 communication without access to ±12V power rails. It is suitable for applications where board space is limited due to its integrated charge pump design. Confirm that the required data rate does not exceed 120 kbps and that the operating environment remains within the specified commercial temperature limits.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The family provides various configurations of drivers and receivers, with the MAX232 specifically offering a dual-channel solution for standard serial communication tasks.

Replacement Considerations

The MAX232EEWE+T serves as a direct functional replacement, offering identical electrical characteristics but with an extended industrial temperature range (-40°C to +85°C). Verify pin compatibility and package dimensions before substitution.