MAX3483EPA+

Overview

The MAX3483EPA+ is a half-duplex RS-485/RS-422 transceiver housed in an 8-pin Plastic DIP package. It operates from a single 3.0V to 3.6V supply with typical current consumption of 1.1mA and shutdown current of 2nA. The device supports data rates up to 250kbps using slew-rate-limited drivers. It features a -7V to +12V common-mode input range, fail-safe receiver outputs, and thermal shutdown protection. Operating temperature range is -40°C to +85°C.

Feature Summary

• Slew-rate-limited drivers minimize electromagnetic interference and reduce signal reflections on improperly terminated cables.
• Integrated low-power shutdown mode reduces supply current to typically 2nA when both driver and receiver are disabled.
• Fail-safe receiver inputs guarantee a logic-high output state if the differential bus lines are left open.

Applications

• Low-Power RS-485/RS-422 Transceivers
• Telecommunications
• Transceivers for EMI-Sensitive Applications
• Industrial-Control Local Area Networks

Procurement Notes

Verify the component matches the specific Analog Devices / Maxim Integrated part number MAX3483EPA+. Confirm the 'E' suffix indicates the extended industrial temperature range (-40°C to +85°C) and the 'PA+' suffix denotes the 8-pin Plastic DIP package with lead-free/RoHS compliance. Cross-reference against official manufacturer documentation to ensure authenticity and correct revision status.

Selection Notes

Select this component for half-duplex applications requiring reduced electromagnetic emissions due to its slew-rate-limited driver characteristics. It is suitable for systems needing low quiescent power consumption via the shutdown feature. Ensure the design accommodates the 3.3V supply voltage and utilizes the industry-standard 75176 pinout configuration for compatibility.

Part Context

This device belongs to the MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/MAX3491 family of 3.3V low-power transceivers. While other members support higher speeds or full-duplex operation, the MAX3483 specifically provides half-duplex communication with slew-rate limiting optimized for error-free transmission at lower data rates.

Replacement Considerations

MAX3483CPA+

FAQ

What is the maximum data rate supported by the MAX3483EPA+?

The MAX3483EPA+ supports data rates up to 250kbps.

How does the MAX3483EPA+ handle open-circuit receiver inputs?

It includes a fail-safe feature that guarantees a logic-high output if both receiver inputs (A and B) are open circuit.

What mechanism protects the driver outputs from excessive power dissipation?

The device incorporates thermal shutdown circuitry that places the driver outputs into a high-impedance state if the die temperature rises excessively.