MAX4520EUT

Overview

The MAX4520EUT is a single-channel, normally open SPST analog switch manufactured by Analog Devices Inc./Maxim Integrated. It supports single supply voltages from 9V to 36V and dual supplies from ±4.5V to ±20V. The device features fault protection up to ±36V when powered and ±44V when unpowered. Key electrical parameters include a maximum on-resistance of 160Ω, a typical off-state leakage current of 0.5nA at 25°C, and switching times with Ton max 500ns and Toff max 175ns. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Provides robust overvoltage fault protection for both powered and unpowered states to safeguard downstream circuitry.
• Maintains extremely low off-state leakage current to ensure signal integrity during switching operations.
• Compatible with TTL and CMOS logic levels for direct interface with microcontrollers without level shifting.
• Operates reliably across wide single and dual power supply ranges for versatile industrial applications.

Applications

• Industrial data acquisition systems requiring high-voltage isolation.
• Automated test equipment (ATE) signal routing.
• Signal multiplexing in harsh environments.
• Protection of sensitive backend circuits from external voltage spikes.

Procurement Notes

Verify the specific suffix 'EUT' against official Analog Devices documentation to confirm package type and tape-and-reel configuration. Ensure the component meets RoHS compliance requirements if specified for your project. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the operating temperature range aligns with your system's environmental constraints before finalizing procurement.

Selection Notes

Select this component when high-voltage fault tolerance is critical for protecting downstream electronics. It is suitable for applications requiring low leakage current to preserve weak signal accuracy. The wide supply voltage range allows flexibility in power design. Consider the on-resistance value to ensure minimal signal attenuation in your specific load conditions.

Part Context

This component belongs to the MAX45xx series of CMOS analog switches designed for industrial applications. It offers enhanced reliability compared to standard switches through integrated fault protection mechanisms. The series is known for compatibility with various logic families and robust performance in demanding environments.

Replacement Considerations

The MAX4520EUA+ is listed as a direct substitute with identical functionality but in an 8-uMAX/uSOP package. Verify pinout and package dimensions compatibility before substitution.