MAX4520EUA

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4520EUA is a single-pole/single-throw (SPST) analog switch in an 8-pin µMAX package. It features fault protection on the normally open terminal, supporting signals up to ±36V with power applied and ±40V when powered off. The device operates from dual supplies of ±4.5V to ±20V or a single supply of +9V to +36V. Key electrical parameters include a maximum on-resistance of 160Ω, a typical off-leakage current of 0.5nA at +25°C, and a charge injection of 1.5pC. Logic inputs are compatible with TTL and CMOS standards.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Rail-to-Rail signal handling capability
• Fault protection on NC/NO terminals
• TTL and CMOS logic compatibility

Analog Switches, Multiplexers, Demultiplexers Applications

• Data Acquisition
• Industrial and Process-Control Systems
• Avionics
• ATE Equipment
• Redundant/Backup Systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Ensure that any additional characters do not alter the functional specifications or pinout configuration. Cross-reference the manufacturer's part numbering system to validate the exact component variant before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring fault protection on the signal path without disrupting normal operation. Verify that the required supply voltage falls within the specified single or dual supply ranges. Confirm that the load impedance and leakage current requirements align with the device's electrical characteristics.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the MAX4510/MAX4520 family of rail-to-rail, fault-protected SPST analog switches. While the MAX4510 offers a normally closed configuration, the MAX4520 provides a normally open switch. Both share identical fault protection mechanisms and electrical performance profiles.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

MAX4510EUA

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the MAX4520 handle overvoltage faults?

During a fault condition where the NO terminal exceeds the supply rails, the switch input becomes a high-impedance open circuit. The output clamps to the appropriate supply voltage, sourcing or sinking up to 13mA to protect downstream circuitry.

What is the logic input threshold compatibility?

The digital input features +0.8V and +2.4V logic thresholds, ensuring compatibility with both TTL and CMOS logic levels 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 up to ±40V even in the absence of supply voltage.