MAX3238ECDWG4

Overview

The MAX3238ECDWG4 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V power supply and supports data rates up to 1 Mb/s. The device integrates five drivers and three receivers in full-duplex operation. It features ±15-kV electrostatic discharge (ESD) protection per human body model. The component is housed in a 28-pin TSSOP package with an industrial temperature range of -40°C to +85°C.

Feature Summary

• Multichannel architecture providing five independent drivers and three receivers for complex serial communication interfaces.
• Integrated high-level ESD protection rated at ±15 kV (HBM) on all RS-232 lines to enhance system reliability.
• Single-supply operation capability ranging from 3 V to 5.5 V, simplifying power management in portable systems.

Applications

• Industrial control systems requiring robust serial communication links
• Portable equipment utilizing battery-powered single-supply architectures
• Modems and fax machines needing multi-channel RS-232 connectivity

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free and RoHS compliance status according to current manufacturer documentation. Confirm the package type matches the required PCB footprint, as variations exist between SOIC and TSSOP formats within this family. Ensure the operating temperature grade aligns with the intended environmental conditions before finalizing procurement orders.

Selection Notes

Select this component when multiple RS-232 channels are required within a single integrated circuit. Compare against the MAX3237 if fewer channels suffice, or the MAX3243 for higher data rate requirements. Verify that the 1-Mb/s speed meets the application's timing constraints and that the TSSOP-28 package fits the design layout.

Part Context

This part belongs to the MAX323x family of low-power RS-232 transceivers designed for mobile and handheld applications. It shares functional similarities with the MAX3238EIPWR but differs in package style and temperature rating. The device complements other interface solutions by offering channel density and ESD protection in a compact form factor.

Replacement Considerations

The MAX3238EIPWR serves as a direct alternative with identical electrical specifications but utilizes a TSSOP-28 package instead of the DWG4 variant. Verify pinout compatibility and thermal performance differences between package styles during substitution analysis.