MAX3073EAPD

Overview

The MAX3073EAPD is a full-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates at a fixed supply voltage of 3.3 V with a maximum data rate of 500 kb/s. The device features ±15 kV ESD protection on the bus pins and incorporates fail-safe circuitry to ensure a logic-high receiver output when inputs are open or shorted. Hot-swap capability prevents false transitions during power-up or insertion. It utilizes a 14-pin PDIP package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Hot-swap capability eliminates false bus transitions during power-up or hot insertion events.
• Fail-safe receiver guarantees a logic-high output state when differential inputs are open or shorted.
• Slew-rate-limited drivers minimize electromagnetic interference (EMI) and reduce signal reflections.

Applications

• Industrial automation networks requiring robust RS-485 communication
• Building automation systems utilizing half-duplex or full-duplex topologies
• Process control instrumentation with exposed bus connections

Procurement Notes

Verify the specific suffix against official documentation, as packaging variations exist between tube and tape-and-reel formats. Confirm RoHS compliance status for the exact revision. Cross-reference the manufacturer part number with authorized distributor catalogs to ensure authenticity and traceability before procurement.

Selection Notes

Select this component for applications requiring full-duplex operation at speeds up to 500 kb/s. Ensure the system design accommodates the 14-pin PDIP footprint. Verify that the 3.3 V supply voltage aligns with the target logic levels. Consider the ±15 kV ESD rating for environments with high electrostatic discharge risk.

Part Context

This device belongs to the MAX307xE family of low-power, 3.3 V RS-485/RS-422 transceivers. It shares core architectural features with siblings like the MAX3070E and MAX3076E but is distinct in its specific slew-rate limiting and duplex configuration. The family emphasizes reliability in noisy industrial environments through integrated protection mechanisms.

Replacement Considerations

The ADM3073EARZ is a pin-compatible alternative from Analog Devices offering similar electrical characteristics. Verify package compatibility and thermal performance differences before substitution. Check datasheet specifications for any minor variations in ESD thresholds or shutdown current requirements.