MAX3081EPA+

Overview

The MAX3081EPA+ is a high-speed RS-422/RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver in an 8-pin PDIP package for through-hole mounting. The device operates on a single +5V supply (4.75V to 5.25V) with a typical quiescent current of 375µA. It supports full-duplex communication at data rates up to 115kbps, utilizing reduced slew-rate drivers to minimize EMI. Fail-safe circuitry ensures a logic-high receiver output when inputs are open or shorted.

Feature Summary

• Fail-safe circuitry guarantees a logic-high receiver output when the receiver inputs are open or shorted.
• Reduced slew-rate drivers minimize electromagnetic interference (EMI) and reduce reflections caused by improperly terminated cables.
• 1/8-unit-load receiver input impedance allows up to 256 transceivers on the bus.
• Thermal shutdown circuitry protects drivers against excessive power dissipation.

Applications

• RS-422/RS-485 Communications
• Level Translators
• Transceivers for EMI-Sensitive Applications
• Industrial-Control Local Area Networks

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for End-of-Life (EOL) notifications from Analog Devices. Ensure the specific ordering suffix matches the required temperature range and package type before finalizing procurement orders.

Selection Notes

Select the MAX3081EPA+ for applications requiring full-duplex RS-422/RS-485 communication at speeds up to 115kbps. Choose this model over higher-speed variants if minimizing EMI and signal reflections is critical. Ensure the design accommodates the 8-pin PDIP footprint and +5V supply requirements.

Part Context

The MAX3081EPA+ belongs to the MAX3080–MAX3089 family of fail-safe, high-speed transceivers. This series includes half-duplex and full-duplex variants with selectable slew rates. The MAX3081 specifically provides full-duplex operation with fixed 115kbps slew-rate limiting, distinguishing it from the 500kbps and 10Mbps models in the same family.

Replacement Considerations

Pin-compatible industry-standard replacements include the 75180 series devices. Verify that substitute components support the required full-duplex mode and 115kbps data rate specifications.