MAX3243CDBRE4

Overview

The MAX3243CDBRE4 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V, supporting both 3.3 V and 5 V logic systems. The device features three drivers and five receivers, providing full-duplex communication with a data rate capability of 250 kb/s. It is housed in a 28-pin SSOP package designed for surface-mount installation. Key electrical specifications include an operating supply current of 1 mA and an extended ESD protection rating of +/-15 kV (HBM). The component functions reliably across a commercial temperature range from 0°C to +70°C.

Feature Summary

• Integrated shutdown mode for significant power reduction during idle periods
• Robust electrostatic discharge protection rated at +/-15 kV on all RS-232 lines
• Capacitor-free design utilizing small external charge pumps for voltage generation
• Compliance with TIA/EIA-232-F and V.28 interface standards

Applications

• Industrial control systems requiring reliable serial communication
• Portable battery-powered instrumentation and medical devices
• Modem and communications equipment interfaces
• Point-of-sale terminals and barcode scanners

Procurement Notes

Verify the complete part number including the suffix RE4 to ensure correct packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Cross-reference the specific ordering information with authorized distributors to validate authenticity and traceability. Ensure the SSOP-28 footprint matches the intended PCB layout requirements.

Selection Notes

Select this component when a multichannel RS-232 solution is required with integrated ESD protection. Compare against the MAX3243ECDBR if higher data rates up to 500 kb/s are necessary. Consider alternative packages such as SOIC or TSSOP if pinout compatibility differs. Verify that the 250 kb/s speed meets the system's baud rate requirements.

Part Context

This device belongs to the MAX3243 family of multichannel transceivers. It shares core functionality with variants like the MAX3243CDWR and MAX3243CPWR but differs in package type and manufacturing revision. The C-grade designation indicates commercial temperature performance. The RE4 suffix typically denotes specific tape-and-reel packaging configurations for automated assembly.

Replacement Considerations

The MAX3243ECDBR serves as a high-speed alternative within the same series. Other compatible options include the MAX3243CDWR for SOIC packaging or the MAX3243CPWR for TSSOP form factors. Verify pin compatibility and thermal characteristics before substituting.