MAX4645EUT+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4645EUT+T is a single-pole, single-throw (SPST) CMOS analog switch manufactured by Analog Devices Inc. It operates from a +1.8V to +5.5V single supply and features a typical on-resistance of 2.5Ω at +5V. The device handles Rail-to-Rail analog signals with an off-leakage current of 0.25nA maximum at +25°C. It offers fast switching speeds, including a turn-on time of 12ns and a turn-off time of 8ns. The component is housed in a 5-pin SOT23 package and supports an operating temperature range from -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Rail-to-Rail output capability for processing analog signals within the supply voltage range
• Low distortion performance suitable for high-fidelity signal routing applications
• TTL/CMOS logic compatible control interface for direct microprocessor integration

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-powered systems requiring low-voltage operation
• Audio and video signal routing circuits
• Low-voltage data-acquisition systems
• Sample-and-hold circuits
• Relay replacement in automated test equipment

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the exact package type and temperature grade. Confirm RoHS compliance status through the manufacturer's datasheet or certification documents before procurement. Ensure the supplier provides traceable manufacturing records to validate authenticity.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for designs requiring low on-resistance flatness and minimal charge injection. Verify that the system power supply remains within the 1.8V to 5.5V operational limits. Consider the 5-pin SOT23 footprint constraints during PCB layout planning. Evaluate thermal dissipation requirements if operating near maximum temperature ratings.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4645/MAX4646 family of fast, low-voltage analog switches. The MAX4645 variant functions as a normally open switch, while the MAX4646 serves as a normally closed switch. Both share identical electrical characteristics and package options, differing only in their default switch state configuration.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes include the MAX4646EUT+T for complementary switching logic. Other compatible alternatives within the same series are the MAX4645EUA+T and MAX4645EUK+T, which offer different package configurations but maintain equivalent electrical specifications.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the difference between the MAX4645 and MAX4646?

The MAX4645 is a normally open (NO) switch, meaning it conducts when the input is high. The MAX4646 is a normally closed (NC) switch, conducting when the input is low.

How does the on-resistance vary with supply voltage?

The on-resistance is typically 2.5Ω max at a +5V supply and increases to 3.5Ω max at a +3V supply. At 1.8V operation, it is typically 30Ω.

Is the MAX4645EUT+T suitable for dual-supply applications?

No, the MAX4645/MAX4646 are designed for single-supply operation ranging from +1.8V to +5.5V.