Dual SPST-NO switch with 100ns switching and -90dB crosstalk
The MAX4541ESA+T from Analog Devices is a dual single-pole single-throw normally-open (SPST-NO) CMOS analog switch in an 8-SOIC package. It switches two independent signal paths on or off with a 1:1 multiplexer/demultiplexer configuration, meaning each channel is a simple pass gate — no routing, just connect or disconnect. Key parametrics: 60 ohm max on-resistance with 800 milliohm channel-to-channel matching, 100ns turn-on and 75ns turn-off times, -90dB crosstalk at 1MHz, and 1pC charge injection. The supply range spans 2.7V to 12V single supply, covering both 3.3V and 5V logic systems without an extra regulator. Operating temperature is -40°C to 85°C, the industrial grade that suits outdoor telecom cabinets, factory automation panels, and automotive cabin electronics. Leakage current is 100pA max off-state, and channel capacitance is 8pF on both sides — low enough for audio paths and moderate-speed analog sampling.
Package and rework considerations
The 8-SOIC package (0.154" body width, 3.90mm) is a rework-friendly footprint. The surface-mount body has low thermal mass, so a standard 300°C hot-air profile lifts it cleanly without cooking adjacent passives.
Sourcing posture
The MAX4541ESA+T carries an active lifecycle status and is ROHS3 compliant.
