MAX4643ETA+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4643ETA+ 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 low 4Ω on-resistance with guaranteed flatness of 1Ω over the entire analog signal range at +5V. The device provides fast switching times under 20ns while consuming less than 0.01µW of quiescent power. It includes one normally open and one normally closed switch, offering rail-to-rail analog signal handling with leakage currents below 0.35nA across the full temperature range.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Single-supply operation from +1.8V to +5.5V with rail-to-rail analog signal range
• Low on-resistance of 4Ω maximum with guaranteed flatness and channel matching
• Fast switching speeds under 20ns combined with ultra-low power consumption
• Integrated break-before-make timing for the normally closed switch

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 component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment upon receipt. Ensure storage conditions remain within specified limits to prevent moisture damage. Cross-reference ordering suffixes against official documentation to validate specific variants.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when designing low-voltage systems requiring precise analog signal switching. The dual SPST configuration supports mixed normally open and normally closed logic states. Verify that the operating voltage aligns with the +1.8V to +5.5V specification. Consider thermal dissipation requirements if continuous current ratings are approached.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4641/MAX4642/MAX4643 family of high-speed, low-voltage analog switches. While sharing identical electrical characteristics and pinouts, the family differentiates based on switch state: the MAX4641 offers two normally open switches, the MAX4642 provides two normally closed switches, and the MAX4643 combines one of each type.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes within the same package include the MAX4641EUA+ and MAX4642EUA+. These parts share identical electrical specifications but differ in internal switch configuration. Verify that the application circuit accommodates the specific NO/NC arrangement required by the replacement.