MAX3243IPWR

Overview

The MAX3243IPWR is a Texas Instruments RS-232 transceiver featuring three drivers and five receivers in a TSSOP-28 package. It supports full-duplex communication at data rates up to 250 kb/s with a propagation delay of 0.15 µs. The device operates on a single power supply ranging from 3 V to 5.5 V, drawing 1 mA of quiescent current. It includes a shutdown mode for low-power applications and provides 15 kV ESD protection on all lines. The component functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates three independent line drivers and five line receivers for multi-channel serial communication.
• Includes a dedicated shutdown pin to minimize power consumption during idle periods.
• Provides robust electrostatic discharge protection rated at 15 kV across all signal interfaces.

Applications

• Industrial control systems requiring reliable RS-232 connectivity
• Portable instrumentation and battery-powered devices
• Communication modules in embedded computing environments

Procurement Notes

Verify the specific suffix IPWR confirms the TSSOP-28 surface-mount package and industrial temperature grade (-40°C to +85°C). Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets before procurement. Ensure ordering quantities align with standard tube or reel packaging formats specified by Texas Instruments.

Selection Notes

Select this component when designing circuits requiring multiple transmit and receive channels within a compact footprint. The 250 kb/s speed suits moderate baud rate applications. Consider the 1 mA shutdown current for battery-sensitive designs. Verify that the 3 V to 5.5 V supply range matches the system voltage rails and that the TSSOP-28 thermal characteristics meet the PCB layout requirements.

Part Context

This part belongs to the MAX3243 family of multichannel RS-232 line drivers and receivers. It shares core electrical specifications with variants like the MAX3243IDW (SOIC-28) and MAX3243MPWREP (TSSOP-28, extended temp), differing primarily in package geometry and operating temperature ranges. The IPWR designation specifically identifies the industrial-grade version in the thin-shrink small-outline package.

Replacement Considerations

MAX3243IDW: Pin-compatible alternative in SOIC-28 package. MAX3243MPWREP: Extended temperature variant (-55°C to +125°C) in TSSOP-28. TRS3243IPWRG4: Pin-to-pin compatible successor with minor parameter updates.