MAX3243EETJ+

Overview

The MAX3243EETJ+ is a fully compliant RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates three drivers and five receivers in a TQFN-EP-32 package, supporting data rates up to 250 kbps. The device operates on a single 3.0 V to 5.5 V supply with a typical quiescent current of 1 mA. It features ±15 kV ESD protection on all pins and includes an AutoShutdown function that reduces power consumption during idle periods. The component functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates three independent drivers and five independent receivers for multichannel communication
• Includes AutoShutdown circuitry to minimize power consumption when the RS-232 bus is idle
• Provides robust ±15 kV electrostatic discharge (ESD) protection across all signal pins

Applications

• Industrial control systems requiring reliable serial communication
• Portable instrumentation and battery-powered devices utilizing low-power modes
• Data acquisition systems interfacing with PC or terminal equipment via RS-232

Procurement Notes

Verify the specific suffix ETJ+ corresponds to the TQFN-EP-32 package and commercial temperature grade (-40°C to +85°C). Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the source is an authorized distributor to guarantee authenticity and traceability of the Analog Devices/Maxim Integrated product.

Selection Notes

Select this component when designing space-constrained applications requiring multiple RS-232 channels. The TQFN-EP-32 package offers thermal performance advantages over standard SOIC variants. Consider the 250 kbps speed limit against higher-speed alternatives if system requirements exceed this threshold. Verify voltage compatibility with the target 3.0 V to 5.5 V logic domain.

Part Context

This part belongs to the MAX3243E family of fully compliant RS-232 transceivers. It shares functional similarities with other Maxim Integrated interface ICs but is distinct due to its specific driver/receiver count and integrated AutoShutdown feature. The ETJ+ designation identifies the specific surface-mount packaging and lead-free manufacturing process used by the manufacturer.

Replacement Considerations

Direct substitutes include the MAX3243EEAI-T (SSOP-28) and MAX3243CDBRE4 (SSOP-28). These alternatives maintain similar electrical characteristics but differ in physical package dimensions and pinout geometry. Verify mechanical fit and PCB layout compatibility before swapping packages.