MAX3120CUA+T

Overview

The MAX3120CUA+T is an IrDA 1.2-compatible infrared transceiver designed for battery-powered, space-constrained applications. It operates on a single supply voltage ranging from +3V to +5.5V and supports data rates between 2.4kbps and 115.2kbps. The device consumes 120µA during active operation and features a shutdown mode with only 10nA supply current. It utilizes an 8-pin µMAX package and includes a high-current LED driver capable of sinking 200mA.

Feature Summary

• IrDA 1.2 compatible with flexible optics selection
• Low-power design with 120µA active and 10nA shutdown currents
• High-current infrared LED drive capability up to 200mA

Applications

• Personal Digital Assistants (PDAs)
• Palmtop Computers
• Cell Phones
• Hand-Held Equipment
• Peripherals

Procurement Notes

Verify the component status as discontinued or obsolete through official manufacturer channels before procurement planning. Confirm that the specific ordering suffix matches the required package type and temperature range. Ensure compliance with relevant environmental directives such as RoHS standards applicable to your region. Cross-reference the datasheet revision date to ensure access to the most current technical specifications and application notes.

Selection Notes

Select this component when designing low-profile infrared communication links requiring minimal external circuitry. Verify that the system power supply remains within the specified 3V to 5.5V operating range. Ensure the selected external optical components meet the IrDA specification requirements for wavelength and intensity. Consider the thermal dissipation characteristics if high-duty-cycle transmission is anticipated in the final application design.

Part Context

This part belongs to the MAX3120 family of infrared transceivers manufactured by Analog Devices / Maxim Integrated. The family includes variants with different temperature ranges and packages, such as the SOIC version. The MAX3120 series is specifically engineered to reduce board space while maintaining compatibility with standard IrDA protocols for short-range wireless data transfer.

Replacement Considerations

The MAX3120ESA+ serves as a direct pin-compatible alternative offering the same functionality in an 8-pin SO package. Designers should verify that the physical footprint and thermal characteristics of the replacement package align with the existing PCB layout constraints.