MAX3081ECPA+

Overview

The MAX3081ECPA+ is a full-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply (4.75V to 5.25V) and contains one driver and one receiver. The device features ±15kV ESD protection, fail-safe circuitry, and enhanced slew-rate limiting for error-free data transmission up to 115kbps. It draws 375µA of typical quiescent current and supports up to 256 transceivers on the bus. The component is housed in an 8-pin PDIP package and functions within a temperature range of 0°C to +70°C.

Feature Summary

• Enhanced ESD protection on all I/O pins rated at ±15kV using the Human Body Model.
• True fail-safe receiver guarantees a logic-high output when inputs are open or shorted.
• Slew-rate-limited drivers minimize electromagnetic interference and signal reflections.
• High input impedance allows connection of up to 256 transceivers on a single bus.

Applications

• RS-422 and RS-485 communication networks
• Industrial control local area networks
• Level translation applications

Procurement Notes

Verify the specific suffix 'CPA+' against official manufacturer documentation to confirm the PDIP-8 through-hole package and commercial temperature range. Confirm RoHS compliance status directly with the supplier or datasheet revision history before procurement.

Selection Notes

Select this component for full-duplex applications requiring robust ESD protection and fail-safe operation. Ensure the system operates within the specified +5V supply voltage and that the required data rate does not exceed 115kbps due to the fixed slew-rate limitation.

Part Context

This part belongs to the MAX3080E–MAX3089E family of high-speed transceivers. While sharing core architecture with other variants, the MAX3081E specifically provides full-duplex capability with fixed low-speed slew-rate limiting, distinguishing it from half-duplex models and higher-speed unregulated variants.

Replacement Considerations

The datasheet notes pin compatibility with industry-standard parts such as the 75180. Verify functional equivalence regarding duplex mode and slew-rate limitations before substituting.