ICL3243ECB

Overview

The ICL3243ECB is a full-duplex RS-232 transceiver manufactured by Intersil, designed for low-power applications. It features three drivers and five receivers, supporting data rates up to 250kbps. The device operates on a single power supply ranging from 3V to 5.5V. It includes on-chip voltage converters requiring only four external 0.1µF capacitors. The component offers manual and automatic powerdown functions to reduce standby current to 1µA. It provides 15kV ESD protection and meets EIA/TIA-232 specifications at 3V operation.

Feature Summary

• Integrated charge pumps with minimal external capacitor requirements
• Automatic powerdown functionality for ultra-low standby consumption
• High ESD protection rating for robust signal integrity

Applications

• Personal Digital Assistants (PDAs)
• Notebook and laptop computers
• Palmtops and portable devices

Procurement Notes

Verify the specific suffix 'ECB' against official Renesas/Intersil documentation to confirm temperature range and package variations. Ensure compatibility with existing board layouts when replacing legacy components. Confirm RoHS compliance status through the manufacturer's latest ordering information.

Selection Notes

Select this component for systems requiring low quiescent current and high noise immunity. Verify that the 28-SOIC package fits the available PCB space. Ensure the application environment stays within the specified operating temperature limits for the EC suffix variant.

Part Context

This part belongs to the ICL32XX family of RS-232 transceivers. It serves as a drop-in replacement for older MAX3243 and SP3243 devices. The family is optimized for battery-powered portable electronics where power efficiency is critical.

Replacement Considerations

MAX3243EIDW is listed as an upgrade substitute.