MAX241ECWI+

Overview

The MAX241ECWI+ is a single-supply RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a +5V supply and includes four drivers and five receivers for full-duplex communication. The device supports data rates up to 120 kbps with a typical propagation delay of 10 µs. It features integrated charge pump circuitry, eliminating the need for external bipolar supplies. The component provides ±15kV ESD protection via the Human Body Model and operates within a commercial temperature range of 0°C to +70°C. It is housed in a 28-pin SOIC package.

Feature Summary

• Integrated high ±15kV HBM ESD protection for robust operation in harsh environments
• Built-in charge pump circuitry enables single +5V supply operation without external bipolar voltages
• Low-power shutdown mode significantly reduces current consumption during idle periods

Applications

• Battery-powered equipment requiring low power consumption
• Hand-held devices with limited space and power resources
• Portable diagnostics equipment needing reliable serial communication

Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature range (0°C to +70°C) and 'WI' denotes the SOIC-28 package. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor specifications before procurement. Ensure the ordering part number matches the exact pinout and electrical characteristics required for the design.

Selection Notes

Select this component when designing systems that require RS-232 connectivity with strict ESD protection requirements. It is suitable for applications where board space is limited due to its integrated charge pump. Compare against non-E versions if cost is the primary constraint, as the E version offers enhanced ruggedness. Ensure the system operates within the specified +5V voltage tolerance and temperature limits.

Part Context

The MAX241E belongs to the MAX202E–MAX213E family of RS-232 transceivers. This family shares common architecture but varies in driver/receiver counts and control features. The MAX241E specifically provides four drivers and five receivers, distinguishing it from lower-channel variants like the MAX232E. The 'E' designation signifies enhanced ESD protection compared to standard parts.

Replacement Considerations

The MAX241EEAI+T serves as a pin-compatible alternative offering an extended industrial temperature range (-40°C to +85°C) and SSOP packaging. Verify that the thermal performance and package dimensions of the replacement are compatible with the existing PCB layout.