MAX3318IPW

Overview

The MAX3318IPW is a low-power, full-duplex RS-232 transceiver manufactured by Texas Instruments. It operates from a single 2.25 V to 3 V power supply and supports data rates up to 460 kb/s. The device integrates two drivers and two receivers in a TSSOP-20 package. Key electrical specifications include a typical operating supply current of 2 mA and an ESD protection rating of 15 kV according to IEC 61000-4-2 standards. It functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump eliminates the need for external capacitors
• High electrostatic discharge (ESD) immunity protects against human body model and IEC contact discharges
• Shutdown mode significantly reduces power consumption for battery-operated applications

Applications

• Portable medical equipment requiring robust serial communication
• Industrial control systems with harsh electromagnetic environments
• Handheld terminals and mobile data collection devices

Procurement Notes

Verify the suffix IPW confirms the TSSOP-20 package and industrial temperature grade (-40°C to +85°C). Confirm RoHS compliance status through official manufacturer documentation or certified datasheets prior to integration. Ensure ordering quantities align with standard reel sizes if applicable.

Selection Notes

Select this component when a single 3 V supply is available and high ESD protection is critical. Compare against TRS3318E variants which may offer extended commercial temperature ranges or different pin configurations. Verify that the 460 kb/s speed meets system requirements compared to higher-speed alternatives like the MAX3222 series.

Part Context

The MAX3318 belongs to the Maxim Integrated RS-232 transceiver family, now part of Texas Instruments following acquisition. This specific part number represents the industrial-grade version in a thin-shrink small-outline package, designed for space-constrained portable electronics requiring reliable serial connectivity.

Replacement Considerations

The TRS3318ECPWR is a documented parameter-equivalent alternative from Texas Instruments. Verify package compatibility and temperature range differences before substitution.