MAX3043CUE+T

Overview

The MAX3043CUE+T is a quad RS-485/RS-422 transmitter manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply and supports data rates up to 250kbps. The device features ±10kV ESD protection (Human Body Model) and ±4kV Electrical Fast Transient/Burst immunity per IEC 1000-4-4. It includes hot-swap capability to prevent false transitions during power-up or insertion. Operating current is 1mA, with a shutdown mode consuming 2nA. It is housed in a 16-pin TSSOP package and functions within a temperature range of 0°C to +70°C.

Feature Summary

• Hot-swap capability prevents erroneous data transfer during board insertion or power-up sequences.
• Slew-rate limiting minimizes electromagnetic interference and reduces signal reflections on improperly terminated cables.
• Integrated high-level electrostatic discharge protection ensures robustness against handling and operational stress.
• Low-power shutdown mode significantly reduces energy consumption when the transmitters are disabled.

Applications

• Telecommunications equipment
• Industrial motor control systems
• Transmitter for ESD-sensitive applications
• Hand-held equipment
• Industrial PLCs

Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm the specific suffix indicates the correct temperature range and packaging format. Ensure compliance with RoHS directives if required for the target assembly process. Cross-reference the datasheet revision to confirm pinout and electrical characteristics match the design requirements.

Selection Notes

Select this model for applications requiring reliable RS-485 or RS-422 transmission at speeds up to 250kbps. The slew-rate limited output makes it suitable for minimizing EMI in noisy industrial environments. Consider the hot-swap feature for systems requiring board insertion without disrupting active bus lines. Verify that the 0°C to +70°C commercial temperature range meets the environmental constraints of the deployment site.

Part Context

This component belongs to the MAX3040–MAX3045 family of quad 5V RS-485/RS-422 transmitters. It serves as a low-power, ESD-protected upgrade to industry-standard drivers like the SN75174 and DS26LS31C. The MAX3043 variant specifically provides 250kbps performance with slew-rate limiting, distinguishing it from higher-speed models in the same series.

Replacement Considerations

Pin-compatible replacements include the MAX3040, MAX3041, MAX3042B, MAX3044, and MAX3045B variants within the same family. Legacy equivalents such as the SN75174 and DS26LS31C may be replaced, though functional differences in ESD protection and shutdown modes should be evaluated.