MAX3245ECWI+

Overview

The MAX3245ECWI+T is a true RS-232 transceiver featuring three drivers and five receivers. It operates from a single +3.0V to +5.5V supply with a typical shutdown current of 1µA using AutoShutdown Plus technology. The device guarantees data rates up to 1Mbps and includes ±15kV ESD protection on all inputs and outputs. It utilizes a dual charge pump requiring only four small capacitors for operation. The component is housed in a 28-pin SOIC Wide (SO-Wide) package.

Feature Summary

• AutoShutdown Plus technology automatically reduces supply current to 1µA when the interface is idle or disconnected, eliminating the need for BIOS modifications.
• MegaBaud capability ensures reliable 1Mbps communication speeds suitable for high-speed peripherals like ISDN modems.
• Integrated dual charge pumps generate required RS-232 voltage levels from low-voltage supplies using minimal external components.
• Robust ±15kV ESD protection safeguards I/O pins against electrostatic discharge events.

Applications

• Notebook, subnotebook, and palmtop computers
• Cellular phones and handheld equipment
• Battery-powered peripherals and printers

Procurement Notes

Verify the specific suffix 'W' corresponds to the SO-Wide package and 'E' indicates the industrial temperature range during sourcing. Confirm RoHS compliance status via official manufacturer documentation before integration. Ensure ordering codes match the exact pinout and electrical specifications required for the design.

Selection Notes

Select this model for applications requiring high-speed 1Mbps transmission over standard RS-232 lines. The integrated AutoShutdown Plus feature makes it ideal for battery-operated systems where power conservation is critical without software intervention. Verify that the 28-pin wide package fits the available PCB footprint constraints.

Part Context

This component belongs to the MAX32xx family of low-power RS-232 transceivers manufactured by Analog Devices/Maxim Integrated. It shares core architectural features with the MAX3224–MAX3227 series but offers higher data rate capabilities compared to the 250kbps variants within the same product line.

Replacement Considerations

Direct functional substitutes include other members of the MAX3245 family such as MAX3245ECAI+T (SSOP package) or MAX3245EEUI+T (TSSOP package). These alternatives maintain identical electrical performance while differing primarily in physical packaging dimensions.