MAX234EWE

Overview

The MAX234EWE+T is a single-channel RS-232 driver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply and utilizes an internal charge pump to generate the required ±10V for RS-232 signaling, eliminating the need for external bipolar supplies. The device is housed in a 16-pin Wide SOIC package (7.50mm width) and supports data rates up to 120kbps. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual charge-pump circuitry to convert a single +5V supply into the necessary positive and negative voltages for RS-232 communication.
• Designed specifically for EIA/TIA-232E and V.28/V.24 interface applications where space constraints prevent the use of discrete components.

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this component. Confirm that the '+ ' designation ensures compliance with current environmental standards. Cross-reference the manufacturer's official ordering guide to ensure the selected part number matches the exact package dimensions and temperature rating required for your design.

Selection Notes

Select the MAX234EWE+T when only a single transmitter channel is required for RS-232 communication. This component is appropriate for designs constrained by printed circuit board area due to its integrated charge pump. Ensure the application does not require receiver channels or shutdown control features, as these are absent in this specific model.

Part Context

This component belongs to the MAX220–MAX249 family of line drivers and receivers. These devices are engineered to provide multichannel RS-232 functionality using a single power source. The MAX234 variant specifically provides one driver output, distinguishing it from other family members that offer multiple transmitters or combined driver/receiver configurations.

Replacement Considerations

Public confirmed substitute part numbers: MAX234CWE+, MAX234ESE+