MAX241EWI+T

Overview

The MAX241EWI+T is a +5V-powered, multichannel RS-232 transceiver from the MAX220–MAX249 family. It integrates four drivers and five receivers with full-duplex operation. The device operates on a single +5V supply (4.5V to 5.5V) using an internal dual charge pump to generate ±10V rails. Key electrical parameters include a data rate of 64 kbps, typical propagation delays of 3.5 µs for transmitters and 1.5 µs for receivers, and a shutdown supply current of 8 µA at +25°C. It features ±30V receiver input protection and is housed in a 28-pin Wide SOIC package.

Feature Summary

• Integrates dual charge-pump DC-DC voltage converters to eliminate the need for external bipolar power supplies.
• Provides independent enable controls for individual transmitter and receiver channels to optimize power consumption.
• Features high noise immunity with Schmitt-trigger inputs and built-in ESD protection on receiver lines.

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 communication networks
• Portable diagnostic equipment requiring low-power standby modes

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the 'E' designation matches the -40°C to +85°C industrial temperature range requirements. Ensure the component is sourced as lead-free and RoHS compliant per the manufacturer's standard specifications for this part number.

Selection Notes

Select this component for designs requiring multiple transmit and receive channels within a single IC footprint. The integrated charge pump simplifies board layout by removing external capacitors typically needed for voltage inversion. Consider the 64 kbps data rate limit when designing for high-speed serial communications.

Part Context

This part belongs to the Maxim Integrated MAX220–MAX249 family of +5V-powered RS-232 line drivers and receivers. The family offers various configurations of driver and receiver counts, ranging from single-channel to multi-channel solutions, all designed to operate from a single +5V supply without requiring external negative voltage sources.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.