MAX3130EAI+

Overview

The MAX3130EAI+ is a hybrid microcircuit integrating an IrDA 1.2 compatible infrared transceiver with an RS-232 interface in a single 28-pin SSOP package. It operates on a single +3.0V to +5.5V supply, supporting IrDA data rates from 2.4kbps to 115kbps and RS-232 rates up to 120kbps. The device features a high-power LED driver capable of sinking 200mA, an onboard encoder/decoder for non-IrDA UARTs, and a dual charge-pump power supply. Typical supply current is 370µA, reducing to 1µA in shutdown mode.

Feature Summary

• Integrates IrDA 1.2 infrared transceiver and RS-232 interface within a compact 28-pin SSOP package
• Includes onboard IR encoder/decoder to enable communication with standard non-IrDA UARTs
• Features a high-current infrared LED driver capable of sinking 200mA for robust transmission
• Utilizes a proprietary dual charge-pump power supply to generate true RS-232 levels from a single low-voltage supply

Applications

• Personal Digital Assistants (PDAs)
• Palmtop Computers
• Battery-Powered Systems
• Hand-Held Equipment
• Cellular Phones

Procurement Notes

Verify the component status as discontinued or obsolete through official Analog Devices channels before design finalization. Confirm that the E suffix denotes the extended temperature range of -40°C to +85°C. Ensure the ordering suffix matches the specific RoHS compliance requirements of the project. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing standards.

Selection Notes

Select the MAX3130 variant if multiplexing a single UART between infrared and RS-232 interfaces is required. Choose the MAX3131 variant when independent, simultaneous operation of both protocols is necessary. Ensure external optical components meet the specified irradiance and capacitance limits. Verify that the BAUD16 clock frequency is correctly configured to enable the onboard encoder/decoder functionality.

Part Context

This component belongs to the MAX3130/MAX3131 family of 3V to 5.5V IrDA infrared transceivers with integrated RS-232 interfaces. The MAX3130EAI+ specifically represents the industrial temperature grade version packaged in a 28-pin SSOP. It combines analog signal processing for infrared reception with digital logic translation for serial communication standards.

Replacement Considerations

Public confirmed substitute part numbers: MAX3130CAI, MAX3130EAI, MAX3131CAI, MAX3131EAI.