MAX3073EASD+

Overview

The MAX3073EASD+ is a +3.3V, full-duplex RS-485 transceiver featuring one driver and one receiver in a 14-pin SOIC package. It supports data rates up to 500kbps with slew-rate-limited drivers to minimize EMI. The device includes ±15kV Human Body Model ESD protection on I/O pins, fail-safe circuitry guaranteeing a logic-high output when inputs are open or shorted, and hot-swap capability for the DE and RE inputs. Operating supply voltage is fixed at 3.3V, with a typical supply current of 1.5mA and shutdown current of 10µA. It operates within an industrial temperature range of -40°C to +125°C.

Feature Summary

• Slew-rate-limited drivers facilitate error-free data transmission up to 500kbps while minimizing electromagnetic interference.
• Integrated hot-swap input structure on DE and RE pins eliminates false transitions during power-up or hot insertion.
• True fail-safe receiver guarantees a logic-high output when receiver inputs are open, shorted, or connected to a terminated bus with all transmitters disabled.

Applications

• Industrial Control Systems
• Telecommunications Equipment
• Security Systems

Procurement Notes

Verify the specific suffix 'ASD+' against official documentation to confirm the extended temperature range (-40°C to +125°C) and SOIC-14 package type. Ensure compatibility with system requirements for 3.3V operation and full-duplex communication protocols before finalizing procurement.

Selection Notes

Select this component for applications requiring robust ESD protection and reliable performance in electrically noisy environments. The MAX3073E variant is suitable for systems needing data rates up to 500kbps with controlled slew rates. Verify that the full-duplex architecture aligns with the bidirectional communication needs of the target design.

Part Context

The MAX3073EASD+ belongs to the MAX3070E–MAX3079E family of high-speed RS-485/RS-422 transceivers manufactured by Analog Devices (Maxim Integrated). This series shares common features such as 3.3V operation, fail-safe receivers, and hot-swap capabilities, but varies in duplex mode and maximum data rate specifications based on the specific model number.

Replacement Considerations

The MAX3073EESD+ serves as a direct alternative within the same family, offering identical electrical characteristics but rated for the commercial temperature range (-40°C to +85°C) instead of the industrial range.