MAX3225EAAP+T

Overview

The MAX3225EAAP+T is a low-power, true +3V to +5.5V RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features two drivers and two receivers for full-duplex communication with data rates up to 120 kbps. The device operates from a single supply voltage ranging from 3 V to 5.5 V and draws only 1 mA of supply current. It includes AutoShutdown Plus functionality to reduce power consumption during idle periods or when the PC is off. The component is housed in an SSOP-20 package and supports ESD protection ratings of ±15 kV on RS-232 lines.

Feature Summary

• AutoShutdown Plus technology automatically powers down the device when no signal activity is detected
• Single-supply operation compatible with standard PC serial ports without requiring negative voltages
• Integrated charge pump circuitry eliminates the need for external capacitors in some configurations
• High ESD protection ensures reliability in harsh electrical environments

Applications

• Personal computer serial port interfaces
• Modem connections
• Portable instrumentation with battery power constraints
• Industrial control systems requiring RS-232 connectivity

Procurement Notes

Verify the exact suffix EAAP against official Analog Devices documentation to confirm pinout and thermal characteristics. Confirm RoHS compliance status through the manufacturer's latest certification documents. Check for obsolescence notices or lifecycle changes directly from Analog Devices before finalizing procurement plans.

Selection Notes

Select this component when designing circuits that require low standby power and automatic shutdown capabilities. Ensure the application environment stays within the specified 3 V to 5.5 V supply range. Verify that the 120 kbps data rate meets the system requirements. Consider the SSOP-20 package size constraints during PCB layout planning.

Part Context

This part belongs to the MAX3225E family of RS-232 transceivers designed for low-power applications. It shares functional similarities with other Maxim integrated RS-232 solutions but distinguishes itself through its specific AutoShutdown Plus feature set and single-supply architecture optimized for portable devices.

Replacement Considerations

Direct substitutes include other MAX3225 variants with different packaging options such as MAX3225ECPA+. Cross-reference with MAX3232 series if higher data rates are acceptable. Verify pin compatibility before replacing existing designs.