MAX3072EESA+

Overview

The MAX3072EESA+ is a half-duplex RS-485 transceiver operating from a single +3.3V supply. It features one driver and one receiver with ±15kV Human Body Model ESD protection on I/O pins. The device incorporates fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. Slew-rate-limited drivers minimize electromagnetic interference (EMI) and reduce reflections, supporting error-free data transmission up to 250kbps. Hot-swap capability prevents false transitions during bus insertion. The component operates within a temperature range of -40°C to +85°C and is housed in an 8-pin SOIC package.

Feature Summary

• Slew-rate-limited drivers for reduced EMI and reflection minimization
• Hot-swap input structure on DE and RE pins to prevent bus errors
• True fail-safe receiver ensuring logic-high output under fault conditions
• ±15kV Human Body Model ESD protection on all I/O pins

Applications

• Industrial Control Systems
• Telecommunications Equipment
• Security Systems
• Lighting Systems
• Instrumentation

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature rating. Confirm RoHS compliance status through manufacturer datasheets. Ensure the selected variant matches the required half-duplex configuration and slew-rate limitations for the target application environment.

Selection Notes

Select this component for applications requiring robust noise immunity and hot-plug safety on RS-485 networks. The 250kbps maximum data rate suits standard industrial communication speeds. Verify that the 8-pin SOIC footprint aligns with the PCB layout constraints and thermal management requirements of the design.

Part Context

This part belongs to the MAX3070E–MAX3079E family of +3.3V, ±15kV ESD-protected, fail-safe, hot-swap RS-485 transceivers manufactured by Analog Devices Inc./Maxim Integrated. The family provides various speed options and duplex configurations within a standardized pinout architecture.

Replacement Considerations

Other members of the MAX3070E–MAX3079E family may serve as alternatives if different data rates or full-duplex operation are required. Verify pin compatibility and electrical specifications before substitution.

FAQ

What is the maximum data rate supported by the MAX3072E?

The MAX3072E supports a maximum data rate of 250kbps due to its slew-rate-limited drivers.

How does the fail-safe feature function?

The fail-safe circuitry guarantees a logic-high receiver output when the receiver inputs are open, shorted, or connected to a terminated bus with all transmitters disabled.

Is the MAX3072E suitable for hot-swapping?

Yes, it includes hot-swap capability on the DE and RE inputs to eliminate false transitions on the bus during power-up or hot insertion.