MAX3243EIPWE4

Overview

The MAX3243EIPWE4 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates on a single 3-V to 5.5-V supply and integrates three drivers and five receivers with an internal charge pump requiring only four small external capacitors. The device supports data rates up to 250 kbps and features ±15-kV ESD protection on RS-232 bus pins per the Human Body Model (HBM). It includes an automatic power-down mode that reduces supply current to 1 µA when no valid signal is detected, making it suitable for battery-powered applications.

Feature Summary

• Integrates three independent line drivers and five independent line receivers within a single package.
• Features automatic power-down functionality to minimize power consumption during idle periods.
• Provides robust electrostatic discharge protection of ±15 kV on all RS-232 bus lines.
• Operates from a single low-voltage power supply ranging from 3 V to 5.5 V.

Applications

• Battery-powered portable equipment such as PDAs and laptops
• Industrial control systems requiring reliable serial communication
• Handheld devices and mobile terminals

Procurement Notes

Verify the specific suffix 'EIPWE4' against official Texas Instruments documentation to confirm pinout compatibility and temperature grade. Ensure the ordering part number matches the required package style and moisture sensitivity level for your assembly process. Cross-reference with the latest datasheet revision to confirm RoHS compliance status and any recent manufacturing changes.

Selection Notes

Select this component when designing systems requiring multiple RS-232 channels with minimal external capacitance. It is appropriate for space-constrained designs needing low standby current. Compare against other MAX3243 variants if different package types or extended industrial temperature ranges are required for the specific application environment.

Part Context

This part belongs to the MAX3243 family of true 3-V to 5.5-V RS-232 transceivers. It shares core electrical specifications with other members like the MAX3243EIPWR but differs in packaging and specific commercial/industrial grading indicated by the suffix. It serves as a direct interface between UARTs and RS-232 connectors.

Replacement Considerations

Direct replacements include MAX3243EIPWR and MAX3243EIPW. Verify package dimensions and thermal characteristics before substitution. Other family members may offer different temperature ranges or pin configurations.