MAX3243MDBREP

Overview

The MAX3243MDBREP is a military-grade RS-232 transceiver manufactured by Texas Instruments, designed for robust serial communication in demanding environments. It operates on a single power supply ranging from 3 V to 5.5 V and integrates three drivers and five receivers within a TSSOP-28 package. The device supports full-duplex data transmission at rates up to 250 kb/s while maintaining low quiescent current of 1 mA. It features ±15 kV electrostatic discharge protection on RS-232 lines and functions reliably across an extended temperature range from -55°C to +125°C. This component meets TIA/EIA-232-F standards and includes shutdown capabilities for power management.

Feature Summary

• Military-grade reliability with extended temperature operation suitable for harsh conditions
• Integrated charge pump enables single-supply operation without external inductors
• High electrostatic discharge protection ensures signal integrity and device safety
• Flexible power management with automatic shutdown to minimize energy consumption

Applications

• Mil-enhanced embedded systems requiring high reliability
• Industrial control interfaces operating in extreme temperatures
• Ruggedized portable equipment and handheld devices
• Aerospace and defense communication modules

Procurement Notes

Verify the specific suffix MDBREP against official Texas Instruments documentation to confirm military qualification status and tape-and-reel packaging configuration. Ensure compatibility with existing board layouts regarding the TSSOP-28 footprint. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability records before procurement.

Selection Notes

Select this component when military-grade performance and wide temperature tolerance are required for RS-232 applications. Compare pinout compatibility with standard commercial variants if replacing existing designs. Consider the TSSOP-28 package constraints for space-limited PCBs. Verify that the 250 kb/s data rate meets system timing requirements and that the 3 V to 5.5 V supply range aligns with available power rails.

Part Context

This part belongs to the MAX3243 family of multi-channel RS-232 transceivers. It shares functional similarities with commercial versions like the MAX3243IDBREP but differs in qualification level and temperature range. The military variant provides enhanced durability compared to standard industrial parts. It serves as a direct interface solution between microcontrollers and serial ports in critical applications.

Replacement Considerations

The MAX3243MPWREP is a verified military-grade alternative in the same series. Check datasheet specifications for temperature range and package dimensions to ensure interchangeability. Confirm that electrical parameters such as driver output voltage and receiver threshold levels remain compatible with the target system design.