MAX3238EIPW

Overview

The MAX3238EIPW 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 features integrated charge pumps for generating the required voltage levels. The device includes five drivers and three receivers, supporting full-duplex communication with a data rate of up to 250 kbps. It provides ±15-kV electrostatic discharge (ESD) protection on both signal and logic pins. 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 charge pump eliminates the need for external capacitors in some configurations or reduces count compared to older generations
• High ESD protection rating ensures robustness against static discharge events on I/O and logic interfaces
• Multichannel architecture supports multiple serial ports within a single compact package

Applications

• Industrial control systems requiring reliable serial communication
• Portable instrumentation and medical equipment
• Modems and fax machines
• Printers and peripheral devices

Procurement Notes

Verify the exact suffix 'IPW' corresponds to the TSSOP-28 package and industrial temperature grade (-40°C to +85°C). Confirm RoHS compliance status as indicated in official datasheets. Check for any specific ordering information regarding tape and reel versus tube packaging if applicable to the specific sub-part number variant.

Selection Notes

Select this component when multiple RS-232 channels are needed in space-constrained designs. Ensure the system voltage falls within the 3-V to 5.5-V range. Consider the 250 kbps speed limit for high-speed applications where faster transceivers might be necessary. Verify that the 28-pin footprint fits the PCB layout constraints.

Part Context

This part belongs to the MAX3238 family of multichannel RS-232 transceivers. It shares functional similarities with other Maxim Integrated/TI RS-232 lines but offers higher channel density than dual-channel parts like the MAX3232. It is designed for applications needing more than two serial ports without increasing board area significantly.

Replacement Considerations

Direct replacements include the MAX3238IDWR (TSSOP-28) or MAX3238EEAI+ (SSOP-28), noting package differences. For pin-compatible alternatives, check the MAX3243 series if fewer channels suffice. Always verify electrical parameters and package dimensions before substitution.