MAX3243EETJ+T

Overview

The MAX3243EETJ+T is a fully compliant RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates three drivers and five receivers in a single package, supporting full-duplex communication with data rates up to 250 kbps. The device operates on a single power supply ranging from 3.0 V to 5.5 V and features an ultra-low standby current of 1 µA when the shutdown pin is deactivated. It includes internal charge pumps that generate the necessary ±6 V signals for RS-232 transmission without requiring external capacitors exceeding 0.1 µF. The component provides 15 kV ESD protection on both the transmitter inputs and receiver outputs, ensuring robust performance in harsh environments.

Feature Summary

• Integrates three independent drivers and five independent receivers within a single compact package.
• Features AutoShutdown circuitry that automatically places the receivers in a high-output state when the power supply is removed or below the operating threshold.
• Provides comprehensive electrostatic discharge protection rated at 15 kV according to the IEC 1000-4-2 standard for both contact and air discharge methods.

Applications

• Industrial control systems requiring reliable serial communication over long distances.
• Portable battery-powered equipment utilizing low-power RS-232 interfaces.
• Modem and communications equipment interfacing with personal computers.

Procurement Notes

Verify the specific suffix +T indicates tape-and-reel packaging versus tube variants. Confirm RoHS compliance status through official manufacturer documentation. Ensure the ordering part number matches the required TQFN-EP-32 package type. Cross-reference the manufacturer's latest lifecycle status to confirm availability and production recommendations.

Selection Notes

Select this component when designing systems requiring multiple transmit and receive lines in a space-constrained layout. The integrated charge pump reduces external component count compared to older discrete solutions. Verify that the 250 kbps speed meets the application requirements, as higher-speed alternatives exist within the same family. Ensure the 3.0 V minimum voltage aligns with the system's power rail specifications.

Part Context

This device belongs to the MAX3243E series of RS-232 transceivers designed for low-voltage operation. The series shares functional similarities with other Maxim Integrated interface ICs but distinguishes itself through the specific combination of three drivers and five receivers. The +T suffix denotes the reel packaging format used for automated surface-mount assembly processes.

Replacement Considerations

MAX3243EETJ+