MAX4520EUA+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4520EUA+ is a single-pole/single-throw (SPST) analog switch featuring fault protection and rail-to-rail signal handling. It operates with dual supplies from ±4.5V to ±20V or a single supply between +9V and +36V. The device provides up to ±36V fault protection during power-on and ±40V with power off, ensuring the switch input becomes an open circuit during faults while supplying up to 13mA to the load. Key electrical parameters include a maximum on-resistance of 160Ω, off-leakage current of 0.5nA at +25°C, and TTL/CMOS-compatible logic inputs.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Fault-protected NC/NO terminals handle overvoltage conditions without transitioning glitches
• Rail-to-rail signal capability allows full voltage swing across the switch
• Low leakage current ensures high isolation when the switch is in the off state
• No power-supply sequencing required for reliable operation

Analog Switches, Multiplexers, Demultiplexers Applications

• Data Acquisition Systems
• Industrial and Process-Control Systems
• Avionics Equipment
• Automated Test Equipment (ATE)
• Redundant and Backup Systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'EUA+' corresponds to the 8-pin µMAX package and the -40°C to +85°C temperature range as listed in the manufacturer's ordering information. Confirm RoHS compliance status through official documentation before finalizing procurement specifications.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring robust fault protection on the signal path. Ensure the supply voltage does not exceed the absolute maximum ratings. Verify that the load current requirements remain within the 13mA sourcing/sinking limits provided by the internal booster FETs during fault conditions.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4510/MAX4520 family of rail-to-rail, fault-protected SPST analog switches manufactured by Analog Devices Inc./Maxim Integrated. The MAX4520 variant specifically features a normally open configuration, distinguishing it from the MAX4510 which is normally closed.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4510EUA+ serves as a functional substitute within the same family, differing only in its normally closed switch configuration rather than the normally open topology of the MAX4520EUA+.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the MAX4520 behave during a fault condition?

During a fault, the switch input terminal becomes an open circuit with only nanoamperes of leakage current flowing from the fault source. The switch output furnishes up to 13mA of the appropriate polarity supply voltage to the load.

What are the logic input compatibility levels?

The digital input has +0.8V and +2.4V logic thresholds, ensuring both TTL- and CMOS-logic compatibility when using ±15V or a single +12V supply.

Is power-supply sequencing required?

No power-supply sequencing is required. The switch turns off automatically when power is removed, maintaining fault protection capabilities.