MAX3082ECPA

Overview

The MAX3082ECPA is a half-duplex RS-485/RS-422 transceiver featuring ±15kV ESD protection and fail-safe circuitry. It operates from a single +5V supply with a typical quiescent current of 375µA. The device incorporates reduced slew-rate drivers to minimize EMI, supporting error-free data transmission up to 115kbps. It utilizes a 1/8-unit-load receiver input impedance, allowing up to 256 transceivers on the bus. The component is housed in an 8-pin Plastic DIP package and functions within a temperature range of 0°C to +70°C.

Feature Summary

• Half-duplex communication architecture for RS-485/RS-422 networks
• Enhanced ±15kV electrostatic discharge protection on all I/O pins
• Fail-safe receiver guarantees logic-high output during open or shorted input conditions
• Reduced slew-rate driver design minimizes electromagnetic interference and signal reflections

Applications

• RS-422 and RS-485 serial communications
• Industrial control local area networks
• Transceivers designed for EMI-sensitive applications

Procurement Notes

Verify the specific suffix 'CPA' corresponds to the 8-pin Plastic DIP package and the C-grade temperature range (0°C to +70°C). Confirm that the ordering information matches the exact manufacturer part number to ensure correct pinout and electrical characteristics are received.

Selection Notes

Select this component when half-duplex operation is required alongside low-power consumption and robust ESD protection. The reduced slew rate makes it suitable for noisy environments or improperly terminated cables where data rates do not exceed 115kbps. Ensure the application voltage remains within the specified +5V limits.

Part Context

This device belongs to the MAX3080E–MAX3089E family of high-speed transceivers. While sharing core features like ESD protection and fail-safe logic with full-duplex variants, the MAX3082E specifically integrates internal switching for half-duplex mode, distinguishing it from the MAX3080E and MAX3081E.

Replacement Considerations

The datasheet indicates pin compatibility with industry-standard parts such as the SN75180. Designers should verify that any replacement maintains the half-duplex configuration and the specific 115kbps slew-rate limitations.