MAX3243EIDB

Overview

The MAX3243EIDBR is a low-power RS-232 transceiver manufactured by Texas Instruments, designed for multi-channel communication applications. It integrates three drivers and five receivers within a single SSOP-28 package. The device operates on a single power supply ranging from 3 V to 5.5 V, supporting both 3.3 V and 5 V logic levels. It achieves data rates up to 500 kb/s with full duplex capability. Key electrical specifications include a propagation delay of 0.15 µs and an operating quiescent current of 1 mA. The component provides 15 kV electrostatic discharge (ESD) protection and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates three independent line drivers and five line receivers in a compact surface-mount package.
• Features integrated charge pump circuitry that eliminates the need for external capacitors.
• Provides robust 15 kV human body model ESD protection on all RS-232 lines.
• Includes a shutdown mode to minimize power consumption during idle periods.

Applications

• Industrial control systems requiring reliable serial communication.
• Portable instrumentation and battery-powered devices.
• Modems and communication equipment interfaces.
• Point-of-sale (POS) terminals and barcode scanners.

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature grade. The IDB designation typically indicates an SSOP-28 package with extended industrial temperature ratings. Confirm RoHS compliance status through manufacturer documentation. Ensure ordering quantities align with standard reel or cut tape availability. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when multiple transmit and receive channels are required in a space-constrained design. The 500 kb/s speed suits most standard RS-232 applications. Consider the SSOP-28 footprint for PCB layout compatibility. Evaluate thermal performance if operating near maximum temperature limits. Compare pinout compatibility with existing designs before substitution.

Part Context

This device belongs to the MAX3243 family of multi-channel RS-232 transceivers. It shares functional similarities with other members like the MAX3243IDW but differs in packaging. The family is characterized by low power consumption and high ESD tolerance. It serves as a bridge between microprocessor UARTs and RS-232 ports.

Replacement Considerations

The MAX3243EIDWRG4 is a verified equivalent offering identical functionality in a SOIC-28 package. Check pin-to-pin compatibility before implementation. Verify that the alternative package fits the existing PCB footprint constraints.