MAX391C/D

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX391C/D is a precision, quad, single-pole single-throw (SPST) analog switch integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It features four independent channels configured as SPST switches within a compact package. The device supports both single and dual power supply configurations, operating on a single supply from 3 V to 15 V or dual supplies from ±3 V to ±8 V. Key electrical specifications include a maximum on-resistance of 35 Ohms, a maximum turn-on time of 130 ns, and a maximum turn-off time of 75 ns. The component is designed for commercial temperature ranges, typically starting at 0°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Precision switching performance with low on-resistance for signal integrity
• Quad channel architecture providing four independent SPST switches in one package
• Flexible power supply compatibility supporting both single and dual voltage rails

Analog Switches, Multiplexers, Demultiplexers Applications

• Signal routing in data acquisition systems
• Multiplexing applications in instrumentation
• Audio signal path switching

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix designation when ordering, as it determines the package type and temperature range. The 'C' variant typically denotes commercial grade operation, while other suffixes may indicate extended temperature ranges or different packaging formats. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability varies by region and manufacturing lot.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a quad SPST configuration is required for precise analog signal switching. Ensure the application voltage stays within the 3 V to 15 V single supply or ±3 V to ±8 V dual supply limits. Consider the 35 Ohm on-resistance and 130 ns switching speed against system requirements. Verify that the SOIC-Narrow-16 package fits the PCB layout constraints if using the CSE variant.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX391 belongs to the Maxim Integrated precision analog switch family, which includes related parts like the MAX392 and MAX393. These devices are commonly used in industrial control, communications, and test equipment where reliable analog signal switching is critical. The MAX391 specifically offers a quad configuration, distinguishing it from dual-channel alternatives in the same series.