MAX3243CDB

Overview

The MAX3243CDB 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, supporting full-duplex data transmission at rates up to 250 kb/s. The device operates from a single 3 V to 5.5 V power supply with a typical quiescent current of 1 mA. It features an integrated shutdown mode for power conservation and provides 15 kV electrostatic discharge (ESD) protection on all RS-232 lines. The component functions reliably across a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrates three independent drivers and five receivers for multi-port serial communication
• Includes a dedicated shutdown pin to minimize power consumption during idle periods
• Provides robust 15 kV ESD protection on all signal lines to enhance system reliability

Applications

• Industrial control systems requiring multiple serial connections
• Portable instrumentation and battery-powered devices
• Communication modules in embedded computing environments

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and temperature grade. Ensure the ordering part number matches the required SSOP-28 configuration and commercial operating range. Cross-reference manufacturer datasheets to validate RoHS compliance status and lead times prior to procurement.

Selection Notes

Select this component when designing circuits requiring three transmit and five receive channels without external charge pumps. Compare performance against the MAX3243E series if higher data rates or extended industrial temperature ranges are necessary. Verify that the 250 kb/s speed meets application requirements and that the SSOP-28 footprint fits the PCB layout constraints.

Part Context

This part belongs to the MAX3243 family of RS-232 interface ICs from Texas Instruments. The 'C' designation typically indicates the commercial temperature grade variant. It shares architectural similarities with other MAX32xx series devices but is distinguished by its specific driver/receiver count and power management features tailored for cost-sensitive multi-channel applications.

Replacement Considerations

The MAX3243ECDB serves as a direct functional alternative with identical pinout and electrical characteristics, differing primarily in the extended industrial temperature rating. Verify thermal requirements before substitution.