MAX3281EAUT+T

Overview

The MAX3281EAUT+T is a single true fail-safe receiver designed for RS-485 and RS-422 communication. It guarantees data rates up to 52Mbps with a 3V power supply. The device features excellent propagation delay (15ns max) and package-to-package skew time (8ns max). It includes an active-high receiver enable pin and operates within a 3V to 5.5V power-supply range. The component provides ±15kV ESD protection on the receiver inputs and supports up to 128 receivers on the bus due to its 1/4-unit-load input impedance.

Feature Summary

• True fail-safe circuitry ensures a logic-high output when receiver inputs are open or shorted
• Active-high receiver enable pin allows control of the three-state output stage
• Integrated thermal protection limits power dissipation during output short circuits
• High ESD protection ratings on differential inputs prevent damage from static discharge

Applications

• Multidrop clock distribution networks
• Telecom racks and base stations
• Industrial control systems
• Local area networks
• Automotive electronics

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm lead-free status and tape-and-reel packaging configuration. Ensure the selected variant matches the required temperature range and enable pin polarity before procurement. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status.

Selection Notes

Select this component when a single receiver with an active-high enable signal is required for RS-485 or RS-422 buses. It is suitable for applications needing high-speed data transmission up to 52Mbps in compact SOT23 packages. Consider alternative variants if low-voltage logic compatibility or active-low enable functionality is necessary instead.

Part Context

This component belongs to the MAX3280E/MAX3281E/MAX3283E/MAX3284E family of single receivers. These devices share common electrical characteristics, including fail-safe architecture and high ESD protection. The MAX3281EAUT+T specifically distinguishes itself through its active-high enable pin configuration compared to other members of the series.

Replacement Considerations

MAX3280EAUT+T lacks the enable pin. MAX3283EAUT+T uses an active-low enable pin. MAX3284EAUT+T utilizes a VL pin for low-voltage logic compatibility.