MAX3072EESA+T

Overview

The MAX3072EESA+T is a half-duplex RS-485 transceiver operating from a single +3.3V supply. It features one driver and one receiver with a maximum data rate of 250kbps. The device includes ±15kV ESD protection on I/O pins, fail-safe circuitry ensuring a logic-high output when inputs are open or shorted, and hot-swap capability to prevent false transitions during power-up. Supply current is typically 800μA. It operates within an industrial temperature range of -40°C to +85°C and is housed in an 8-pin SOIC package.

Feature Summary

• Integrated fail-safe circuitry guarantees a logic-high receiver output when the bus is idle or disconnected.
• Hot-swap input structure prevents erroneous data transmission during board insertion into powered backplanes.
• Reduced slew-rate drivers minimize electromagnetic interference (EMI) and signal reflections on improperly terminated cables.

Applications

• Industrial control systems
• Telecommunications equipment
• Security and alarm systems

Procurement Notes

Verify the specific suffix 'EESA+T' corresponds to the SOIC-8 surface-mount package and lead-free RoHS compliance. Confirm that the 'E' grade designation matches the required -40°C to +85°C industrial temperature range for the target application environment.

Selection Notes

Select this component for applications requiring robust noise immunity and simplified bus termination due to reduced slew rates. Ensure the design utilizes a single 3.3V supply and requires half-duplex communication. Verify that the 250kbps data rate meets system timing requirements.

Part Context

This part belongs to the MAX3070E–MAX3079E family of high-speed RS-485/RS-422 transceivers manufactured by Analog Devices (Maxim Integrated). It shares common interface standards and protection features with siblings like the MAX3070E and MAX3075E, differing primarily in duplex mode and data rate capabilities.

Replacement Considerations

The MAX3072EEPA+ is available as a through-hole PDIP-8 alternative within the same series. Other family members such as the MAX3070E offer full-duplex operation, while the MAX3075E supports higher data rates up to 500kbps.