MAX4642EUA+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4642EUA+ is a monolithic, dual, single-pole/single-throw (SPST) CMOS analog switch manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single supply voltage ranging from +1.8V to +5.5V and features two normally closed (NC) switches. The device guarantees a maximum on-resistance of 4Ω at +5V and 8Ω at +3V, with an on-resistance flatness of 1Ω over the entire analog signal range. Switching times are fast, with typical turn-on and turn-off times of 18ns and 12ns respectively at +5V. Quiescent power consumption is less than 0.01µW, and leakage currents remain below 0.35nA across the operating temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Dual SPST configuration with two normally closed channels
• Low on-resistance with guaranteed flatness and channel matching
• Ultra-low quiescent power consumption suitable for battery operation
• Rail-to-rail analog signal handling capability

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 RoHS compliance status and check for product change notifications regarding discontinuance. Ensure the ordering suffix matches the required package type and temperature grade specifications before finalizing procurement orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a dual SPST normally closed configuration is required within a low-voltage system. Verify that the logic input levels are compatible with the specific supply voltage being used, as TTL/CMOS compatibility is only guaranteed at +5V. Consider the 8-pin µMAX package constraints for PCB layout and thermal dissipation requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4641/MAX4642/MAX4643 family of high-speed, low-voltage analog switches. While electrically similar, the MAX4642 specifically provides two normally closed switches, distinguishing it from the MAX4641 which offers two normally open switches. All variants share identical pinouts and electrical characteristics except for the switch state.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

MAX4641EUA+ (Normally Open variant)

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the difference between the MAX4642 and MAX4641?

The MAX4642 contains two normally closed (NC) switches, whereas the MAX4641 contains two normally open (NO) switches. They share the same package, pinout, and electrical specifications.

Is the MAX4642 compatible with standard TTL logic levels?

TTL/CMOS compatibility is only valid for operation using a +5V supply. At lower supply voltages such as +3V or +1.8V, the logic thresholds differ from standard TTL levels.

How does the device handle overvoltage conditions?

ESD-protection diodes are internally connected between each analog-signal pin and both V+ and GND. Signals exceeding these rails will cause one of these diodes to conduct, potentially leading to leakage current.