MAX3131EAI+

$14.83

Description：IC TRANSCEIVER FULL 2/2 28SSOP
Mfr：Analog Devices Inc./Maxim Integrated

SKU:04a0ff6b4363 Category: Drivers, Receivers, Transceivers Brand: Analog Devices Inc./Maxim Integrated

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Product introduction

Product Detailed Parameters

Description：IC TRANSCEIVER FULL 2/2 28SSOP
Mfr：Analog Devices Inc./Maxim Integrated
Package：Tube
Series：-
Type：Transceiver
Protocol：RS232
Number of Drivers/Receivers：2月2日
Duplex：Full
Data Rate：235Kbps
Voltage - Supply：3V ~ 5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：28-SSOP (0.209", 5.30mm Width)
Supplier Device Package：28-SSOP
Receiver Hysteresis：300 mV

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MAX3131EAI+

Overview

The MAX3131EAI+ is a hybrid microcircuit integrating an IrDA infrared transceiver and a full RS-232 interface within a single 28-pin SSOP package. It operates on a single +3.0V to +5.5V supply, utilizing a dual charge-pump power supply for true RS-232 performance. The device supports IrDA data rates from 2.4kbps to 115kbps with an onboard encoder/decoder (ENDEC) for non-IrDA UARTs. The RS-232 section includes two drivers and two receivers supporting up to 120kbps, typically operating at 235kbps. Supply current is 370µA, reducing to 1µA in shutdown mode.

Feature Summary

Integrates IrDA 1.2 compatible infrared transceiver and RS-232 interface in a single package
Onboard encoder/decoder allows communication with non-IrDA UARTs
High-power LED driver capable of sinking 200mA for infrared transmission
Low-power shutdown capability reduces supply current to 1µA

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 manufacturer channels before procurement planning. Confirm that the '+' suffix indicates RoHS compliance and lead-free construction relative to the base part number. Ensure compatibility with existing design specifications regarding the 28-SSOP package dimensions and thermal requirements.

Selection Notes

Select this component when simultaneous independent IrDA and RS-232 communication is required without multiplexing overhead. Verify that the system operates within the specified -40°C to +85°C temperature range. Ensure the application can accommodate the minimal external component count, specifically four 0.1µF capacitors and optical components, while maintaining the required supply voltage stability between 3.0V and 5.5V.

Part Context

This device belongs to the MAX3130/MAX3131 family of 3V to 5.5V hybrid microcircuits. The MAX3131 variant specifically provides separate IrDA and RS-232 transceivers, unlike the MAX3130 which multiplexes one channel. Both devices share the same core architecture for infrared reception and RS-232 generation but differ in signal routing flexibility for UART integration.