MAX3241EWI

Overview

The MAX3241EWI is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-pin SOIC-Wide package. It integrates three drivers and five receivers for full-duplex communication with a data rate of 1 Mbps. Operating on a single 3.0V to 5.5V supply, it consumes only 1 mA during active mode and drops to 10 nA in shutdown. The device features 15 kV ESD protection on all RS-232 lines and includes AutoShutdown Plus to reduce power consumption when the bus is idle.

Feature Summary

• Integrates three independent drivers and five receivers for comprehensive RS-232 connectivity
• Provides 15 kV human-body model ESD protection on transmit and receive lines
• Features AutoShutdown Plus technology to automatically disable drivers and receivers during idle periods
• Operates efficiently from a single 3.0V to 5.5V power supply with minimal current draw

Applications

• Industrial control systems requiring robust serial communication
• Portable battery-powered equipment needing low standby current
• Modem and fax machine interface circuits
• Point-of-sale terminals and medical instrumentation

Procurement Notes

Verify the specific suffix against the manufacturer's official datasheet to confirm pinout compatibility and electrical characteristics. Ensure the component meets RoHS directives if required by your assembly process. Cross-reference the ordering number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when designing systems that require high ESD immunity alongside low power consumption. It is suitable for applications operating between 3.0V and 5.5V where space is limited. Consider the 28-SOIC package dimensions for PCB layout constraints. Verify that the 1 Mbps speed meets the system's baud rate requirements.

Part Context

This part belongs to the MAX32xx family of true RS-232 transceivers designed for low-voltage operation. It replaces older 5V-only RS-232 solutions by supporting 3.3V and 5V logic levels. The MAX3241 variant specifically offers three drivers and five receivers, providing more I/O flexibility than dual-driver counterparts within the same series.

Replacement Considerations

The MAX3241EEAI+ serves as a direct functional substitute in an SSOP-28 package. For wider SOIC packages, the MAX3241EWI+ is available. Ensure voltage ranges and ESD ratings match the original design specifications when substituting.