MAX241EWI

Overview

The MAX241EWI+ is a +5V-powered, multichannel RS-232 transceiver featuring four drivers and five receivers. It operates in full-duplex mode with a data rate of 120 kb/s. The device utilizes an internal charge pump to generate ±10V from a single +5V supply, eliminating the need for external bipolar voltages. It is housed in a 28-pin SO-Wide package and supports surface-mount installation. Operating current is 15 mA at +5V, with a propagation delay of 10 µs. The component functions within a temperature range of -40°C to +85°C and includes a shutdown capability.

Feature Summary

• Integrated charge pump circuitry enables single-supply operation without requiring external bipolar voltage sources.
• Shutdown mode significantly reduces power consumption for energy-efficient system management.
• Provides full-duplex communication channels with multiple independent driver and receiver outputs.

Applications

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

Procurement Notes

Verify the specific suffix 'EWI+' against the manufacturer's official ordering guide to confirm the wide SOIC package and industrial temperature grade. Ensure the component meets RoHS compliance requirements if mandated by the project specifications. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before procurement.

Selection Notes

Select this component when designing systems that require multiple RS-232 channels powered exclusively by a +5V rail. It is suitable for applications where board space is limited due to the integrated charge pump design. Verify that the required data rate does not exceed 120 kb/s and that the operating environment falls within the specified -40°C to +85°C range.

Part Context

The MAX241 belongs to the Maxim Integrated MAX220–MAX249 family of line drivers and receivers. This series is designed for EIA/TIA-232E and V.28/V.24 communications interfaces. The family offers various channel configurations and package options to accommodate different interface density and power requirements in serial communication designs.

Replacement Considerations

The MAX241EEWI+ serves as a verified equivalent part number within the same product family, offering identical electrical characteristics and pinout compatibility.