MAX234EWE+

Overview

The MAX234EWE+ is a +5V-powered, multichannel RS-232 driver/receiver from the MAX220–MAX249 family. It features four drivers and zero receivers in full-duplex operation. The device operates on a single +5V supply (4.5V to 5.5V) with an internal charge pump generating ±10V levels. It supports data rates up to 120kbps with a typical propagation delay of 10µs. Operating current is 20mA at +5V. It functions within -40°C to +85°C temperatures and is housed in a 16-pin SO-Wide package.

Feature Summary

• Integrates dual charge-pump circuitry to generate required RS-232 voltage swings from a single +5V supply
• Provides four independent transmitter channels for multidrop network applications
• Designed for EIA/TIA-232E and V.28/V.24 communication interfaces

Applications

• Multidrop RS-232 networks
• Interface translation between TTL/CMOS logic and RS-232 standards
• Portable diagnostics equipment

Procurement Notes

Verify the specific suffix against official documentation to confirm temperature range and packaging type. Confirm RoHS compliance status through manufacturer certificates. Ensure the component matches the exact pinout and electrical specifications required for the target design before integration.

Selection Notes

Select this part when four transmit channels are required without receiving capability. Verify that external capacitors are used as this variant does not integrate internal charge-pump capacitors. Compare power consumption and board space requirements against integrated capacitor variants if space is constrained.

Part Context

This component belongs to the MAX220–MAX249 series of +5V-powered RS-232 transceivers. The series offers various configurations of drivers and receivers in multiple packages. The MAX234 specifically provides a quad-driver configuration suitable for transmitting data to multiple downstream devices on a serial bus.

Replacement Considerations

Public confirmed substitute part numbers: MAX234EWE+T.