MAX378EPE+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX378EPE+ is a high-voltage, fault-protected analog multiplexer manufactured by Analog Devices Inc./Maxim Integrated. It features an 8-channel single-ended (1-of-8) architecture utilizing a series N-channel/P-channel/N-channel structure for significant fault protection. The device operates from ±4.5V to ±18V supplies and guarantees TTL and CMOS compatibility with logic thresholds of 0.8V and 2.4V. It provides continuous ±60V input withstand capability with power supplies active, and ±75V withstand when supplies are off. Key electrical parameters include a maximum on-resistance of 3.0kΩ, access time of 1.0µs, and break-before-make delay of 200ns. Power dissipation is less than 2mW.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Series FET switching scheme limits fault currents to nanoamp leakage values, preventing damage to sensors or sensitive signal sources during overvoltage events.
• All channels automatically turn off when power supplies are removed, ensuring sub-microamp leakage current flow into inputs regardless of applied voltage.
• Break-before-make operation is guaranteed to prevent simultaneous connection of multiple input channels to the output.

Analog Switches, Multiplexers, Demultiplexers Applications

• Data Acquisition Systems
• Industrial and Process Control Systems
• Avionics Test Equipment
• Signal Routing Between Systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the ordering suffix matches the required temperature range and package specifications. Ensure compliance with RoHS directives if applicable to your manufacturing standards. Cross-reference the datasheet revision date to confirm technical accuracy before integration.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring robust fault protection against high-voltage transients up to ±75V. Consider the ±4.5V to ±18V supply range and ensure the digital interface aligns with standard TTL or CMOS logic levels. Evaluate the on-resistance and settling time requirements relative to the downstream amplifier or ADC specifications.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX378EPE+ belongs to the MAX378/MAX379 family of high-voltage, fault-protected analog multiplexers. This series is designed to protect both the multiplexer and connected circuitry from overvoltage conditions. The EPE variant specifically denotes the extended industrial temperature range and plastic DIP packaging.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Public confirmed substitute part numbers: MAX378CPE, MAX378CWG, MAX378MJE, MAX378MLP.