MAX397EWI+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX397EWI+ is a dual, 8-channel low-voltage CMOS analog multiplexer housed in a 28-pin Wide SOIC package. It operates with single supplies from +2.7V to +16V or dual supplies from ±2.7V to ±8V. The device features a maximum on-resistance of 100Ω at +25°C and maintains flatness within 10Ω over the signal range. Key electrical parameters include a transition time of 150ns, charge injection of 5pC, and off-leakage current under 1nA at +85°C. It supports TTL/CMOS logic inputs and provides ESD protection exceeding 2000V.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Pin-compatible with industry-standard MAX307, DG407, and DG507A devices for direct replacement.
• Offers precision matching between channels with guaranteed on-resistance flatness across the specified signal range.
• Provides extremely low charge injection and minimal leakage currents to maintain signal integrity.

Analog Switches, Multiplexers, Demultiplexers Applications

• Automatic test equipment
• Communications systems
• Audio signal routing
• Industrial process control
• Sample-and-hold circuits

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'EWI+' corresponds to the Wide SOIC-28 package and industrial temperature range (-40°C to +85°C). Confirm that the ordering information matches the manufacturer's current datasheet revision to ensure correct pinout and electrical specifications are met for the design.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a dual 8-channel configuration is required instead of a single 16-channel unit. Ensure the application voltage does not exceed the absolute maximum ratings of ±17V. Consider the 100Ω on-resistance limit when designing for high-current analog signals or minimizing voltage drop errors.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX396/MAX397 family of precision analog multiplexers. While the MAX396 offers a single 16-channel path, the MAX397 provides two independent 8-channel paths. Both share identical fabrication processes and electrical characteristics, differing primarily in channel count and pin assignment.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Publicly confirmed substitutes include the MAX307, DG407, and DG507A due to pin compatibility. Verify that these alternatives meet the specific on-resistance and leakage requirements of the original design before implementation.

Analog Switches, Multiplexers, Demultiplexers FAQ

Is the MAX397EWI+ compatible with standard TTL logic levels?

Yes, the device features TTL/CMOS compatible logic inputs, allowing it to interface directly with standard digital logic families without additional level shifting.

What is the maximum power dissipation for the Wide SO package?

The continuous power dissipation for the Wide SO package is 1000mW at +70°C, derating by 12.50mW/°C above this temperature.

How does the on-resistance vary with temperature?

The on-resistance increases as temperature decreases. At -40°C, the maximum on-resistance can reach 125Ω, compared to 100Ω at +25°C under dual supply conditions.