MAX3238CDB

Overview

The MAX3238CDB is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and features five drivers and three receivers for full-duplex communication. The device supports data rates up to 250 kbps and includes integrated charge pumps requiring only external 0.1-uF capacitors. It provides ±15-kV electrostatic discharge (ESD) protection on both the bus and logic pins, ensuring robust performance in harsh environments. The component is housed in a 28-pin SSOP package and is rated for an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates five drivers and three receivers within a single compact package
• Provides ±15-kV ESD protection on all signal pins to enhance system reliability
• Operates efficiently from a single low-voltage power supply without external regulators

Applications

• Industrial control systems requiring multiple serial connections
• Portable instrumentation with limited power budgets
• Data acquisition modules needing robust noise immunity

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm exact package type and temperature grade. Ensure compatibility with existing PCB footprints for the 28-pin SSOP configuration. Cross-reference the manufacturer's latest datasheet to validate current production status and any potential obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring five transmit and three receive channels. It is suitable for applications demanding high ESD tolerance and operation from a single 3-V or 5-V supply. Consider the 250-kbps speed limit and thermal characteristics relative to the ambient environment. Verify that the required interface standards align with EIA-232-F specifications.

Part Context

This part belongs to the MAX3238 family of multichannel RS-232 transceivers. It shares core functionality with variants like the MAX3238EIPWR but differs in specified operating temperature ranges and packaging options. The family is designed to simplify the implementation of multiple serial ports in space-constrained electronic devices.

Replacement Considerations

Direct substitutes include the SN65C3238 and TRS3238 series from Texas Instruments. Other compatible alternatives may include parts from Maxim Integrated, such as the MAX3238ECAI+, provided pinout and electrical parameters match the design requirements.