MAX394EUP+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX394EUP+ is a low-voltage, quad single-pole/double-throw (SPDT) analog switch in a 20-pin TSSOP package. It operates with bipolar supplies from ±2.7V to ±8V or a single supply of +2.7V to +15V. The device features an on-resistance of less than 35Ω at ±4.5V and guarantees matching within 2Ω between channels. Turn-on time is typically 130ns, while turn-off time is under 75ns. Quiescent current is less than 1μA, and charge injection is guaranteed at 10pC.

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 anywhere between the supply voltages without damage.
• Provides TTL and CMOS logic compatibility across varying supply voltage ranges.

Analog Switches, Multiplexers, Demultiplexers Applications

• Test Equipment
• Communications Systems
• Audio Signal Routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component against official Analog Devices documentation to confirm the specific EUP+ suffix corresponds to the 20-pin TSSOP package and -40°C to +85°C temperature rating. Ensure that the ordering information matches the required RoHS compliance status indicated by the plus sign in the part number.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a quad SPDT configuration with low power consumption is required. The MAX394 is suitable for portable applications due to its sub-microampere quiescent current. Verify that the maximum supply voltage does not exceed 17V between V+ and V-, and ensure logic inputs remain within the specified high and low voltage thresholds for the chosen supply configuration.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the Maxim Integrated MAX394 family of precision analog switches. It serves as a direct pin-compatible replacement for older models such as the MAX333 and MAX333A. The device utilizes a low-voltage silicon-gate process to achieve low power consumption and robust electrostatic discharge protection exceeding 2000V.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX394 is explicitly documented as a pin-compatible replacement for the MAX333 and MAX333A. Designers transitioning from these legacy parts should verify that the new on-resistance and switching speed parameters meet the original circuit requirements.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the break-before-make switching characteristic of the MAX394?

The MAX394 provides a typical break-before-make time delay of 10ns, ensuring that one channel turns off before another turns on to prevent signal shorting.

How does the MAX394 handle overvoltage conditions on analog pins?

Signals on NC, NO, COM, or IN pins can range from (V- - 2V) to (V+ + 2V) without damage. Internal diodes clamp signals exceeding the supply rails, limiting forward diode current to the maximum pin rating.

Is the MAX394 compatible with standard logic families?

Yes, the logic inputs are compatible with both TTL and CMOS standards. They are guaranteed over a +0.8V to +2.4V range for supplies up to +8V, and typically +0.8V to +4V for higher supply voltages.