MAX3238CPW

Overview

The MAX3238CPW 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 the signal lines and logic inputs. The component is housed in a 28-pin TSSOP package and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated ESD protection rated at ±15 kV for human body model on I/O and logic pins
• Supports operation with a single 3-V to 5.5-V power supply
• Includes five independent drivers and three independent receivers
• Features low standby current via a dedicated shutdown mode

Applications

• Industrial control systems requiring robust serial communication
• Portable instrumentation and battery-powered devices
• Modems and portable terminals
• Communication equipment interfacing with PCMCIA cards

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm the exact package type, temperature grade, and tape-and-reel specifications. Ensure the ordering part number matches the required industrial temperature range and pinout configuration for the target PCB design.

Selection Notes

Select this component when a high channel count with integrated ESD protection is required for RS-232 applications. Compare the 250 kbps speed limit against higher-speed alternatives if system requirements exceed this threshold. Verify that the 28-pin TSSOP footprint aligns with the available board space and assembly capabilities.

Part Context

This device belongs to the MAX3238 family of multichannel RS-232 transceivers. It shares functional similarities with other members like the MAX3238EIPWR but differs in packaging and specific environmental ratings. The CPW suffix typically denotes a specific plastic leaded chip carrier or TSSOP variant depending on the manufacturer's coding standards.

Replacement Considerations

Compatible substitutes include the SN65C3238 and TRS3238E from Texas Instruments. Other vendors may offer equivalent parts such as the ST3238EN. Verify pin compatibility and electrical parameters before substitution.