MAX3084ECPA+

Overview

The MAX3084ECPA+ is a full-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply and supports data rates up to 500kbps with slew-rate-limited drivers. The device features ±15kV ESD protection, fail-safe circuitry ensuring a logic-high receiver output when inputs are open or shorted, and low quiescent current of 375µA. It accommodates up to 256 transceivers on the bus via 1/8-unit-load input impedance. 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

• Slew-rate limiting for error-free transmission at 500kbps
• Enhanced ±15kV ESD protection on all I/O pins
• Fail-safe receiver guarantees logic-high output under fault conditions
• Low-power shutdown mode with minimal supply current

Applications

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

Procurement Notes

Verify the specific suffix 'CPA+' against official documentation to confirm the PDIP-8 package and commercial temperature range (0°C to +70°C). Confirm RoHS compliance status through manufacturer declarations. Ensure compatibility with existing PCB footprints for 8-pin through-hole mounting before procurement.

Selection Notes

Select this component for full-duplex applications requiring 500kbps data rates. It is suitable where slew-rate limiting is necessary to reduce reflections on improperly terminated cables. Compare against MAX3083E for identical electrical performance but different package options, or MAX3086E if higher speeds up to 10Mbps are required without slew-rate limitations.

Part Context

The MAX3084E belongs to the MAX3080E–MAX3089E family of high-speed transceivers. This series provides pin-compatible solutions with varying data rate capabilities and duplex modes. The MAX3084E specifically addresses full-duplex needs with intermediate speed requirements, bridging the gap between the 115kbps MAX3081E and the 10Mbps MAX3087E.

Replacement Considerations

The MAX3083ECPA+ offers identical electrical specifications and functionality as a direct replacement. Other family members like MAX3081E or MAX3087E require functional adjustments due to differing data rates.