MAX3238EIDW

Overview

The MAX3238EIDW is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates on a single 3-V to 5.5-V power supply and supports data rates up to 250 kbps. The device integrates five drivers and three receivers in a full-duplex configuration. It features +/-15-kV electrostatic discharge (ESD) protection on both I/O and logic pins, ensuring robust performance in harsh environments. The component is housed in a 28-pin SSOP package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated ESD protection rated at +/-15 kV for I/O and logic pins
• Single-supply operation from 3 V to 5.5 V
• Multichannel architecture with five drivers and three receivers
• Shutdown mode capability for reduced power consumption

Applications

• Industrial communication systems requiring RS-232 connectivity
• Portable instrumentation and battery-powered devices
• Modems and fax machines
• Printers and peripheral equipment

Procurement Notes

Verify the specific suffix IDW confirms the 28-pin SSOP package and industrial temperature grade (-40°C to +85°C). Confirm RoHS compliance status through official datasheets or manufacturer documentation. Ensure the ordering part number matches the required pinout and electrical specifications for the target application design.

Selection Notes

Select this component when a multichannel RS-232 solution with high ESD immunity is required. The MAX3238EIDW provides five transmit channels and three receive channels, suitable for complex serial interfaces. Consider the 250 kbps data rate limit and the 2 mA typical operating current for power budgeting. Verify that the SSOP package fits the available PCB footprint constraints.

Part Context

This device belongs to the MAX3238 family of RS-232 transceivers designed for low-power applications. It shares functional similarities with other Maxim Integrated and Texas Instruments RS-232 products but offers a specific combination of channel count and ESD protection levels. The family is commonly used in legacy serial interface designs where reliability and noise immunity are critical.

Replacement Considerations

The SN65C3238EIDWR is a parameter-equivalent alternative from Texas Instruments. Verify compatibility regarding package dimensions, pinout, and electrical characteristics before substitution.