MAX4643EUA

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4643EUA is a monolithic dual single-pole/single-throw (SPST) CMOS analog switch from the MAX4641/MAX4642/MAX4643 family. It operates on a single supply voltage ranging from +1.8V to +5.5V. The device features one normally open (NO) channel and one normally closed (NC) channel, providing flexible signal routing capabilities. Key electrical specifications include a maximum on-resistance of 4Ω at +5V supply and 8Ω at +3V supply. The component ensures an on-resistance match between channels of 0.6Ω and flatness of 1Ω over the entire analog signal range. Switching times are fast, with typical turn-on and turn-off times under 20ns. Quiescent power consumption is extremely low, less than 0.01µW, and leakage currents remain below 0.35nA across the full operating temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Single-supply operation compatible with logic levels from +1.8V to +5.5V
• Rail-to-rail analog signal handling capability
• Guaranteed low on-resistance with high matching and flatness accuracy
• Ultra-low quiescent power consumption for battery efficiency

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 specific ordering suffix against official manufacturer documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for the 8-pin µMAX package. Confirm that the single-supply voltage requirements align with the system design constraints before finalizing procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a mixed configuration of normally open and normally closed switches is required within a dual-channel architecture. Consider the MAX4643 variant specifically if the application demands both contact types in a single package. Evaluate the low on-resistance and switching speed requirements against the available supply voltage to ensure performance meets the circuit specifications.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4643EUA belongs to the MAX464x series of high-speed, low-voltage CMOS analog switches manufactured by Analog Devices / Maxim Integrated. This series includes complementary variants such as the MAX4641 (dual NO) and MAX4642 (dual NC). The EUA suffix denotes the 8-pin µMAX surface-mount package with an extended industrial temperature range.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional replacements within the same package and specification profile include the MAX4641EUA and MAX4642EUA, though these differ in switch contact configuration. Verify pinout compatibility and electrical characteristics when substituting.