MAX3077EEPA

Overview

The MAX3077EEPA is a full-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates at a fixed supply voltage of 3.3V with a maximum data rate of 16 Mb/s. The device features ±15kV ESD protection and fail-safe circuitry that ensures a logic-high receiver output when inputs are open or shorted. Hot-swap capability prevents false bus transitions during power-up. It includes one driver and one receiver in an 8-PDIP package, drawing 800μA supply current when unloaded.

Feature Summary

• Full-duplex communication architecture supporting simultaneous transmission and reception
• Integrated hot-swap functionality to eliminate false transitions during insertion
• Fail-safe design guaranteeing high-level receiver output under undefined input conditions

Applications

• Industrial control systems requiring robust serial communication
• Building automation networks utilizing RS-485 protocols
• Data acquisition systems operating in electrically noisy environments

Procurement Notes

Verify the specific suffix EEPA confirms the PDIP-8 through-hole package variant rather than surface-mount options. Confirm RoHS compliance status for the specific manufacturing lot. Check for obsolescence notices as Maxim Integrated products may have lifecycle changes. Ensure the supplier provides valid traceability documentation for industrial grade components.

Selection Notes

Select this component when full-duplex operation is required alongside high-speed 16 Mbps data rates. Choose the PDIP-8 package for prototyping or applications necessitating through-hole mounting. Verify that the 3.3V supply voltage aligns with the system power architecture. Consider the 1/8-unit load capability if connecting multiple devices to the same bus segment.

Part Context

This part belongs to the MAX3070E–MAX3079E family of 3.3V RS-485/RS-422 transceivers. Unlike half-duplex variants such as the MAX3072E, the MAX3077E supports simultaneous bidirectional data flow. It shares common features like ESD protection and fail-safe outputs with siblings like the MAX3076E but differs in duplex mode configuration.

Replacement Considerations

The ADM3077EARZ serves as a functional equivalent from Analog Devices offering similar electrical characteristics. Verify pin compatibility and package differences between the PDIP-8 MAX3077EEPA and SOIC-8 alternatives before substitution.