MAX3280EAUK+T

Overview

The MAX3280EAUK+T is a single RS-485/RS-422 receiver manufactured by Analog Devices Inc./Maxim Integrated. It supports data rates up to 52Mbps with a supply voltage range of 3V to 5.5V. The device operates within an extended temperature range of -40°C to +125°C and features ±15kV ESD protection on the A and B input pins. It utilizes a 5-pin SOT23 package and incorporates true fail-safe circuitry that guarantees a logic-high output when inputs are open or shorted.

Feature Summary

• True fail-safe architecture ensures a high output state during bus idle, open, or shorted conditions
• Integrated ±15kV human body model ESD protection on differential input terminals
• Low 1/4-unit-load input impedance allows connection of up to 128 receivers on a single bus
• Thermal protection circuitry limits power dissipation during output short-circuit events

Applications

• Multidrop clock distribution networks
• Telecom rack equipment interfaces
• Industrial control system communication
• Automotive network modules

Procurement Notes

Verify the specific suffix 'AUK' corresponds to the standard commercial grade variant rather than the automotive qualified '/V' version. Confirm the '+T' designation indicates tape and reel packaging for automated assembly processes. Ensure the component meets RoHS compliance requirements for the target manufacturing region.

Selection Notes

Select this component when a compact surface-mount solution is required for RS-485 or RS-422 receiving applications. It is suitable for systems needing high-speed data transfer up to 52Mbps in electrically noisy environments. Consider alternative variants if enable pin functionality or low-voltage logic compatibility is necessary.

Part Context

This part belongs to the MAX328xE family of high-speed receivers designed for robust serial communication. The family includes variants with enable controls (MAX3281E/MAX3283E) and low-voltage logic support (MAX3284E). All members share similar electrical characteristics and package options for flexible system design.

Replacement Considerations

Direct functional replacements include the MAX3281EAUK+T and MAX3283EAUK+T, though these require a 6-pin SOT23 footprint due to additional enable pins. The MAX3284EAUK+T offers low-voltage logic compatibility but also requires a 6-pin package.