MAX3120EUA

Overview

The MAX3120EUA is an IrDA 1.2-compatible infrared transceiver designed for battery-powered, space-constrained applications. It operates on a single +3V to +5.5V supply and consumes only 120µA during active mode, with a 10nA shutdown current. The device supports data rates from 2.4kbps to 115.2kbps over distances of 1cm to 1m. It features a high-current LED driver capable of sinking 200mA and requires minimal external components: a photodiode, an IR LED, and a current-setting resistor. The component is housed in an 8-pin µMAX package.

Feature Summary

• IrDA 1.2 compatible operation supporting data rates up to 115.2kbps
• Ultra-low power consumption with 120µA active current and 10nA shutdown current
• High-power LED driver capable of sinking 200mA for infrared transmission
• Flexible optical layout allowing external selection of photodiodes and LEDs

Applications

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

Procurement Notes

Verify the specific suffix 'EUA' corresponds to the -40°C to +85°C temperature range and 8-pin µMAX package configuration. Confirm that the component meets RoHS compliance requirements if applicable to the target assembly process. Ensure the ordering information matches the exact manufacturer part number to avoid functional discrepancies.

Selection Notes

Select this component for designs requiring low-profile infrared communication in portable devices. Ensure the external optical components meet the specified irradiance and capacitance requirements to maintain signal integrity. Verify that the system power supply remains within the 3V to 5.5V operating range to guarantee proper functionality across the full industrial temperature spectrum.

Part Context

The MAX3120 series includes variants such as the MAX3120CUA and MAX3120CSA, which differ primarily in operating temperature ranges and package types. The MAX3120EUA specifically denotes the extended temperature version (-40°C to +85°C) packaged in the compact 8-pin µMAX format. This family is optimized for minimizing board space while maintaining reliable IrDA connectivity.

Replacement Considerations

Direct substitutes include other parts within the MAX3120 family, such as the MAX3120CUA, provided the temperature range and package type align with the design requirements. Cross-referencing pinouts and electrical characteristics is essential when considering alternative manufacturers or updated generations.