MAX379MJE/883B

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX379MJE/883B 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 16-pin CERDIP package. The device operates from ±4.5V to ±18V supplies with a typical rating of ±15V. It provides continuous ±60V input protection with power on and ±75V with power off. Key electrical parameters include an ON resistance of 2.0kΩ to 3.5kΩ, access time of 0.5µs to 1.0µs, and settling time of 1.2µs to 3.5µs. The operating temperature range for the MJE suffix is -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Fault protection circuitry limits input current to nanoamperes during overvoltage or power-off conditions.
• Break-before-make switching action prevents simultaneous connection of multiple inputs.
• TTL and CMOS compatible digital inputs without requiring external pull-up resistors.
• Latchup-proof construction ensures reliability under harsh electrical environments.

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 ordering suffix /883B against official manufacturer documentation to confirm military-grade qualification status and exact pinout compatibility. Confirm that the 16-pin CERDIP package matches the target board footprint requirements. Ensure supply voltage ranges align with system specifications before integration.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when differential signal routing is required alongside robust fault protection capabilities. The 2-of-8 architecture suits applications needing isolated pairs. Verify that the 2.0kΩ to 3.5kΩ ON resistance meets the signal integrity requirements of the downstream circuitry. Consider the -40°C to +85°C temperature range for industrial environments.

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 mechanisms and digital interface characteristics, differing primarily in channel count and configuration.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

MAX378MJE serves as a functional alternative if single-ended channels are acceptable instead of differential pairs. Other members of the MAX378/MAX379 series may be considered based on package type and temperature range requirements.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the MAX379 handle overvoltage conditions when power is removed?

When power supplies are off, all channels turn off, limiting leakage current to nanoamperes and withstanding continuous input voltages up to ±75V.

What is the break-before-make delay for the MAX379?

The device guarantees a break-before-make delay of 25ns to 200ns, preventing input-to-input shorts during switching.

Is the MAX379 compatible with standard logic levels?

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