MAX4511CSE+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4511CSE+ is a quad, single-pole/single-throw (SPST) analog switch manufactured by Analog Devices Inc./Maxim Integrated. It features fault protection on the normally closed terminals, allowing operation with dual supplies from ±4.5V to ±18V or a single supply between +9V and +36V. The device offers a maximum on-resistance of 175Ω at ±15V supplies, with channel matching limited to 10Ω. Off-leakage current is specified at 0.5nA at +25°C and 10nA at +85°C. The package is a 16-pin Narrow SOIC.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Fault-protected inputs handle overvoltage conditions up to 36V during power-up or power-down without transitioning glitches.
• Rail-to-Rail signal handling capability ensures unambiguous outputs during fault conditions by clamping the output to the appropriate supply voltage.
• TTL- and CMOS-compatible logic inputs ensure compatibility with standard digital logic levels across various supply voltages.

Analog Switches, Multiplexers, Demultiplexers Applications

• ATE Equipment
• Data Acquisition Systems
• Industrial and Process-Control Systems
• Avionics
• Redundant/Backup Systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix 'CSE+' against the manufacturer's official documentation to confirm the commercial temperature range and lead-free status. Ensure the narrow SOIC package dimensions match the target PCB footprint requirements before finalizing procurement decisions.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when fault protection on the NC_ terminal is required for SPST switching applications. Verify that the single-supply voltage range (+9V to +36V) or dual-supply range (±4.5V to ±18V) aligns with the system design constraints and that the 175Ω on-resistance meets the signal integrity requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4511/MAX4512/MAX4513 family of quad, rail-to-rail, fault-protected SPST analog switches. The MAX4511 variant specifically provides four normally closed switches, distinguishing it from the MAX4512 (normally open) and MAX4513 (mixed configuration) within the same pin-compatible series.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The datasheet confirms pin compatibility with industry-standard non-protected switches such as the DG201, DG202, DG213, DG411, DG412, and DG413. Direct replacement requires verifying that the original circuit does not rely on COM_ or IN_ pins being fault protected, as these remain unprotected in the MAX4511.

Analog Switches, Multiplexers, Demultiplexers FAQ

Which pins are fault protected on the MAX4511?

Only the NO_ and NC_ terminals are fault protected. The COM_ and IN_ pins are not fault protected and must be limited to the supply voltages to avoid damage.

What is the maximum fault voltage allowed on the NC_ pin?

The NC_ and NO_ pins can withstand fault voltages up to ±36V with power applied and up to ±40V with power removed.

How does the MAX4511 behave during a fault condition?

During a fault, the protected terminal becomes high impedance, and the COM_ output is clamped to the appropriate supply voltage (V+ or V-) via internal booster FETs, sourcing or sinking up to 10mA.