MAX3243IDW

Overview

The MAX3243IDW is a multi-channel RS-232 transceiver manufactured by Texas Instruments, housed in a 28-pin SOIC package. It operates on a single power supply ranging from 3 V to 5.5 V, with typical operation at 3.3 V or 5 V. The device integrates three drivers and five receivers, supporting full-duplex communication at data rates up to 250 kb/s. Key electrical specifications include a propagation delay of 0.15 µs and an operating supply current of 1 mA. It features ESD protection rated at 15 kV and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates three independent line drivers and five receivers for multi-channel serial communication
• Includes a shutdown mode to minimize power consumption during idle periods
• Provides robust electrostatic discharge protection for reliable signal integrity

Applications

• Industrial control systems requiring RS-232 connectivity
• Portable instrumentation and battery-powered devices
• Modem and communications equipment interfaces

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements before integration. Cross-reference manufacturer part numbers to avoid counterfeit components. Confirm RoHS compliance status through certified datasheets. Validate supply chain authenticity via authorized distributors.

Selection Notes

Select this component when multiple transmit and receive channels are required within a single IC footprint. Consider the 250 kb/s speed limit for application bandwidth constraints. Evaluate the SOIC-28 package dimensions against available PCB space. Compare power consumption metrics if battery life is a critical design factor.

Part Context

This device belongs to the MAX3243 series of RS-232 interface integrated circuits. It serves as a solution for applications needing multiple serial ports without occupying excessive board area. The family typically offers variations in packaging and temperature ranges to suit different environmental conditions.

Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio. Verify that substitute parts maintain identical driver and receiver counts. Ensure replacement components support the same voltage and speed specifications.