MAX379CWG+TG035

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX379CWG+TG035 is a high-voltage, fault-protected analog multiplexer manufactured by Analog Devices Inc./Maxim Integrated. It features four differential channels (2-of-8 configuration) utilizing a series N-channel/P-channel/N-channel structure for significant fault protection. The device operates from ±4.5V to ±18V supplies and ensures all switches turn off when power supplies are removed. Digital inputs are compatible with both TTL and CMOS logic levels without requiring pull-up resistors. It provides break-before-make operation and low-power monolithic CMOS design.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Fault protection allows continuous ±60V input with ±15V power supplies and withstands ±75V with power supplies off.
• All channels automatically turn off if power supplies are removed, limiting leakage current to nanoamperes.
• On-channel turns OFF immediately if overvoltage occurs on the input or output.
• Latchup-proof construction with TTL and CMOS compatible digital inputs.

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 TG035 against official documentation to confirm reel specifications or tape-and-reel packaging details. Confirm that the CWG package variant matches the required 24-Wide SO footprint. Ensure the component meets RoHS compliance standards as indicated by the plus sign in the part number before finalizing procurement orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when differential signal routing with high-voltage fault protection is required. The MAX379 offers two independent outputs compared to the single-ended MAX378. Verify that the ±4.5V to ±18V supply range fits the system design. Ensure the 24-SOIC package dimensions align with the PCB layout constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX378/MAX379 family of high-voltage, fault-protected analog multiplexers. While the MAX378 provides eight single-ended channels, the MAX379 provides four differential channels. Both share identical fault protection circuitry and switching characteristics, differing primarily in channel count and configuration.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX378CWG+ serves as a functional replacement if single-ended channels are sufficient. For other packages, consider the MAX379EPE or MAX379MJE based on temperature requirements. Verify pin compatibility and electrical parameters before substitution.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the MAX379 handle overvoltage conditions?

The MAX379 uses a series FET structure that limits fault currents to sub-microamp levels. It can withstand continuous ±60V input with power on and ±75V with power off, turning off the channel if overvoltage occurs.

What is the difference between the MAX378 and MAX379?

The MAX378 is an 8-channel single-ended multiplexer, while the MAX379 is a 4-channel differential (2-of-8) multiplexer. Both share the same fault protection and switching characteristics.

Are the digital inputs compatible with standard logic families?

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