MAX3243ICAI

Overview

The MAX3243ICAI is a multichannel RS-232 line driver/receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single 3-V to 5.5-V supply and features three drivers and five receivers for full-duplex communication. The device includes an AutoShutdown feature that automatically reduces power consumption during idle periods. It provides ±15-kV ESD protection on all RS-232 lines, ensuring robust performance in harsh environments. Packaged in a 28-pin SSOP, it supports data rates up to 250 kbps with low standby current.

Feature Summary

• Integrates three independent drivers and five independent receivers for comprehensive RS-232 connectivity.
• Features AutoShutdown circuitry to minimize power consumption when the RS-232 bus is idle.
• Provides ±15-kV electrostatic discharge (ESD) protection on all signal lines without external components.

Applications

• Industrial control systems requiring reliable serial communication
• Portable instrumentation and battery-powered devices
• Modem and communications equipment interfaces

Procurement Notes

Verify the specific suffix 'ICAI' against official Maxim Integrated datasheets to confirm package type and temperature range. Ensure compatibility with system voltage requirements of 3 V to 5.5 V. Confirm RoHS compliance status through the manufacturer's current documentation before procurement.

Selection Notes

Select this component when multiple RS-232 channels are needed in a compact surface-mount package. The integrated ESD protection eliminates the need for external transient suppression devices. Ideal for applications where power efficiency is critical due to the automatic shutdown capability.

Part Context

This part belongs to the MAX3243 family of multichannel RS-232 transceivers. It shares functional similarities with other MAX324x variants but differs in pinout configuration and channel count. The ICAI suffix typically denotes a specific industrial temperature range and SSOP packaging format within the Maxim Integrated portfolio.

Replacement Considerations

Compatible substitutes include MAX3243EEAI and MAX3243IDB from Texas Instruments or Analog Devices. Verify pin-to-pin compatibility and electrical specifications such as data rate and operating voltage before substitution.