What this switch is and where it fits
The MAX325ESA+T is a dual SPST analog switch from Analog Devices, configurable as normally-open or normally-closed per channel. It routes analog signals up to the supply rails with a maximum on-resistance of 60 ohms and channel-to-channel matching within 800 milliohms.
Package and mounting
On-resistance of 60 ohms max adds a series resistor to the signal path. Off-leakage is 100 pA max and channel capacitance is 9 pF.
Lifecycle and sourcing reality
The MAX325ESA+T carries an Active lifecycle status per the manufacturer, with ROHS3 compliance. There is no NRND or EOL flag, so it remains a valid choice for new designs and production BOMs. No direct replacement or second source is listed in the available records, but the part is widely used and stocked across multiple distributor channels.