MAX3081EEPA+

Overview

The MAX3081EEPA+ is a full-duplex RS-422/RS-485 transceiver operating from a single +5V supply. It contains one driver and one receiver with ±15kV ESD protection on all I/O pins. The device features fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. It supports data rates up to 10Mbps, though the datasheet specifies 115kbps for slew-rate-limited variants in this family. Quiescent current is typically 375µA. It operates within an industrial temperature range of -40°C to +85°C and is housed in an 8-pin PDIP package.

Feature Summary

• Full-duplex communication architecture supporting simultaneous transmission and reception
• Enhanced electrostatic discharge protection rated at ±15kV Human Body Model
• Fail-safe receiver design ensuring a defined high state during bus idle conditions
• Low-power shutdown mode accessible via dedicated control pins

Applications

• RS-422 and RS-485 serial communication networks
• Industrial control local area networks
• EMI-sensitive applications requiring controlled signal transitions
• Level translation between microprocessors and field buses

Procurement Notes

Verify the specific suffix 'E' confirms the extended temperature range (-40°C to +85°C) and 'PA+' indicates the plastic DIP package with lead-free composition. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Ensure ordering specifications match the required full-duplex configuration.

Selection Notes

Select this component for designs requiring full-duplex operation over twisted-pair cabling. Verify that the system power supply remains stable within the 4.75V to 5.25V range. Consider the 1/8-unit-load input impedance which permits connecting up to 256 devices on the bus. Evaluate thermal requirements if driving heavy loads near maximum ratings.

Part Context

This device belongs to the MAX3080E–MAX3089E series of high-speed transceivers. While sharing similar pinouts and core functionality with other members like the MAX3080E and MAX3082E, it is specifically designated for full-duplex applications. It serves as a robust interface solution for legacy and modern industrial systems requiring reliable differential signaling.

Replacement Considerations

The datasheet notes pin compatibility with industry-standard parts such as the 75180. Designers should verify that substitute components support the same full-duplex topology and meet the ±15kV ESD requirement without altering the board layout.