MAX4643EUA+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4643EUA+T is a monolithic dual single-pole/single-throw (SPST) CMOS analog switch from Analog Devices/Maxim Integrated. It operates on a single supply ranging from +1.8V to +5.5V and features one normally open and one normally closed channel. The device provides a maximum on-resistance of 4Ω at +5V, with guaranteed matching of 0.6Ω and flatness of 1Ω. Switching times are under 20ns, while quiescent power consumption remains below 0.01µW. Leakage currents are low at less than 0.35nA across the full temperature range. It is housed in an 8-pin µMAX package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Single-supply operation compatible with +1.8V to +5.5V rails
• Rail-to-rail analog signal handling capability
• Guaranteed low on-resistance with tight channel matching and flatness specifications
• Ultra-low power consumption suitable for battery-operated equipment

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-operated equipment
• Audio and video signal routing
• Low-voltage data-acquisition systems
• Sample-and-hold circuits
• Communications circuits

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component against official manufacturer datasheets to confirm pinout compatibility and electrical ratings before integration. Ensure that the specific ordering suffix matches the required packaging format. Cross-reference the part number with authorized distributors to validate authenticity and traceability. Confirm RoHS compliance status if environmental regulations apply to the final assembly.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when designing circuits requiring fast switching speeds and minimal power draw within a low-voltage environment. The dual SPST configuration supports mixed normally open and normally closed logic states. Verify that the system voltage stays within the specified 1.8V to 5.5V range to maintain guaranteed on-resistance performance. Consider the thermal dissipation limits if operating near the upper temperature boundaries.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the MAX4641/MAX4642/MAX4643 family of high-speed, low-voltage analog switches. While the MAX4641 offers two normally open channels and the MAX4642 provides two normally closed channels, the MAX4643 combines both types. All variants share identical electrical characteristics regarding resistance, speed, and leakage, differing only in their internal switch configurations.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes within the same package include the MAX4641EUA+T and MAX4642EUA+T. These parts share the same pinout and electrical parameters but differ in switch polarity. Verify that the application logic accounts for the change from mixed NO/NC to all NO or all NC configurations.