MAX379CWG+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX379CWG+T is a high-voltage, fault-protected analog multiplexer manufactured by Analog Devices Inc./Maxim Integrated. It features four differential channels (2-of-8 configuration) housed in a 24-Wide SO package. The device operates from ±4.5V to ±18V supplies with a typical power dissipation of less than 2mW. It provides continuous ±60V input protection with power supplies active and withstands ±75V when supplies are off. Digital inputs are TTL and CMOS compatible, ensuring logic thresholds of 0.8V and 2.4V.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Series N-channel/P-channel/N-channel structure ensures all switches turn off when power supplies are removed.
• Fault protection limits leakage current to nanoamperes under overvoltage conditions.
• Break-before-make operation prevents simultaneous connection of multiple input channels.

Analog Switches, Multiplexers, Demultiplexers Applications

• Data Acquisition Systems
• Industrial and Process Control Systems
• Avionics Test Equipment

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'T' indicates reel packaging upon procurement. Confirm that the CWG variant corresponds to the Wide SO package and the C temperature range. Ensure compatibility with existing system voltage levels before finalizing orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring differential signal routing with robust fault protection. Verify that the 2-of-8 channel count meets system requirements. Ensure supply voltages remain within the ±4.5V to ±18V operational range for optimal performance.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX378/MAX379 family of high-voltage, fault-protected analog multiplexers. While the MAX378 offers eight single-ended channels, the MAX379 provides four differential channels. Both share identical fault protection circuitry and digital interface specifications.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

MAX378CWG+T serves as a functional substitute if single-ended channel configurations are acceptable. Other Maxim fault-protected multiplexers may be considered if channel counts or pinouts differ significantly.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the MAX379 handle overvoltage when power is off?

When power supplies are off, the MAX379 turns all channels off and allows only nanoamperes of leakage current, protecting against continuous input voltages up to ±75V.

What is the maximum operating supply voltage range?

The device operates continuously from ±4.5V to ±18V power supplies.

Does the device support both TTL and CMOS logic levels?

Yes, all digital inputs have logic thresholds of 0.8V and 2.4V, ensuring compatibility with both TTL and CMOS without requiring pull-up resistors.