MAX379CWG

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX379CWG is a high-voltage, fault-protected analog multiplexer featuring four differential channels (2-of-8 configuration). It utilizes a series N-channel/P-channel/N-channel structure to provide significant fault protection against overvoltage conditions. The device operates from ±4.5V to ±18V supplies and guarantees TTL and CMOS compatibility for all digital inputs without requiring pull-up resisters. Break-before-make operation is ensured to prevent input-to-input shorts. Power dissipation is low, typically less than 2mW. The component is housed in a 24-pin Wide SO package and supports an operating temperature range of 0°C to +70°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Fault protection with continuous ±60V input capability while powered and ±75V when power supplies are off
• All switches turn off automatically when power supplies are removed, limiting leakage to nanoamperes
• On channel turns OFF if overvoltage occurs on input or output, preventing damage to downstream circuitry
• TTL and CMOS compatible digital inputs with guaranteed break-before-make switching action

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 specific suffix CWG corresponds to the 24-pin Wide SO package and the commercial temperature range of 0°C to +70°C. Confirm that the ordering information matches the current manufacturer specifications, as product availability and packaging details may change. Ensure the part number aligns with the required differential channel configuration for your design.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the MAX379CWG when a differential signal routing solution with high-voltage fault protection is required. This part is suitable for applications needing isolation between multiple sensor inputs and a single output path. Consider the ±15V supply requirement for optimal performance and verify that the 24-pin package fits the board layout constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX379CWG belongs to the MAX378/MAX379 family of high-voltage, fault-protected analog multiplexers manufactured by Analog Devices Inc./Maxim Integrated. While the MAX378 offers eight single-ended channels, the MAX379 provides four differential channels. Both share the same robust fault-protection architecture and pinout compatibility within their respective channel counts.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX378CWE is a functional substitute offering single-ended channels instead of differential pairs. Other variants in the MAX378/MAX379 series may be considered based on temperature range requirements, such as the E-grade parts for extended industrial temperatures.