MAX3120CSA

Overview

The MAX3120CSA 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 of supply current while supporting data rates up to 115kbps. The device features a 10nA shutdown mode to extend battery life and includes a high-current LED driver capable of sinking 200mA. It requires minimal external components, specifically a photodiode, infrared LED, and current-setting resistor. The component is housed in an 8-pin SO package and operates within a temperature range of 0°C to +70°C.

Feature Summary

• IrDA 1.2 compatible with flexible optics selection
• Low-power operation with 120µA supply current
• High-current infrared LED drive capability
• Minimal external component requirements

Applications

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

Procurement Notes

Verify the specific ordering suffix CSA against official manufacturer documentation to confirm the exact package type and commercial temperature rating. Ensure compatibility with system voltage levels and interface requirements before procurement. Cross-reference the part number with authorized distributors to confirm availability and authenticity.

Selection Notes

Select this component for applications requiring low-profile infrared communication with minimal board space. Evaluate the need for the 0°C to +70°C operating range versus extended temperature variants. Consider the external optical component constraints and layout requirements for optimal performance.

Part Context

The MAX3120 series provides specialized infrared transceiver solutions for portable electronics. The MAX3120CSA variant specifically utilizes an 8-pin Small Outline (SO) package suitable for surface-mount assembly. This family addresses the demand for compact, low-power IrDA interfaces in handheld devices.

Replacement Considerations

Check for pin-compatible alternatives within the same product family or from other manufacturers offering similar IrDA specifications. Verify that any substitute maintains the required data rate, supply voltage range, and package dimensions.