MAX394EWP

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX394EWP is a low-voltage, quad single-pole/double-throw (SPDT) analog switch in a 20-Wide SO package. It operates on bipolar supplies from ±2.7V to ±8V or a single supply of +2.7V to +15V. Key electrical parameters include an on-resistance maximum of 35Ω at +25°C and 45Ω across the full temperature range (-40°C to +85°C). Turn-on time is typically 82ns with a maximum of 130ns, while turn-off time is typically 57ns with a maximum of 75ns. The device features extremely low charge injection of 10pC typical and off-leakage current of 200pA maximum.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Supports both single-supply (+2.7V to +15V) and dual-supply (±2.7V to ±8V) operation for flexible system integration.
• Features rail-to-rail analog signal handling capability, allowing signals to range between supply voltages without damage.
• Includes break-before-make switching logic to prevent signal shorting during channel transitions.
• Provides TTL and CMOS compatible logic inputs for direct interfacing with standard digital control circuits.

Analog Switches, Multiplexers, Demultiplexers Applications

• Test equipment signal routing
• Communications systems multiplexing
• Audio signal routing in portable instruments
• Heads-up display data switching

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'EWP' corresponds to the -40°C to +85°C extended temperature range and the 20-pin Wide SOIC package format. Confirm RoHS compliance status if required by assembly specifications. Ensure ordering documentation matches the manufacturer's part number exactly to avoid pinout mismatches with legacy components.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when low voltage operation below 5V is required alongside high channel count. Compare on-resistance flatness requirements against the specified 6Ω maximum over the signal range. Evaluate power consumption needs against the sub-1μA quiescent current specification for battery-powered applications.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device replaces older models like the MAX333A and maintains pin compatibility with the MAX333 family. It belongs to the Maxim Integrated low-voltage analog switch portfolio, designed for portable electronics where power efficiency and signal integrity are critical constraints.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct pin-compatible replacements include the MAX333 and MAX333A. Verify that substitute parts meet the same -40°C to +85°C operating temperature range and package dimensions before implementation.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the maximum analog signal range for the MAX394EWP?

The analog signals can range anywhere between the negative supply voltage (V-) and the positive supply voltage (V+) without causing damage to the device.

How does the MAX394 handle power-supply sequencing?

Proper sequencing is recommended: apply V+ followed by V- (for split supplies) before applying analog signals or logic inputs to ensure reliable CMOS operation.

Is the MAX394EWP compatible with TTL logic levels?

Yes, the logic inputs are guaranteed to be TTL and CMOS compatible, specifically within a +0.8V to +2.4V input voltage range for supplies up to +8V.