PS391ESEE

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An analog switch is an electromechanical, electrical or opto-electronic device used in signal routing or signal switching applications. The analog switch is a building-block that enables the user to route one or more signals to one or more outputs. An analog switch can be a single pole, single throw switch (SPST) or a single pole, double throw switch (SPDT). Alternatively, it may be a multiple-pole, multiple throw switch (MPTS). Analog switches find application in a variety of areas, from consumer-electronics, automotive and telecom applications to medical, industrial, and military systems.

Analog switches are available in various form factors including through-hole, surface-mount, and chip-scale packages. The physical size of the switch will affect the characteristics of the switch, such as the maximum current, on-resistance, off-leakage current and isolation voltage. Most commercial switches today are digitally controlled using CMOS, MOSFET and other binary-logic-selectable technologies often referred to as “digital-to-analog converters” (DACs). These switches can also be internally protected against electrostatic discharge (ESD), hot swaps or CMOS latches.

Multiplexer, or a multi-channel switch, is an analog switch that is used to route multiple signals to multiple outputs. It can be implemented as a single pole, multiple throw switch (SPMT) or a multiple pole, multiple throw switch (MPMT). A multiplexer can be used to drive multiple signals to multiple outputs or to distribute signals from multiple inputs to multiple outputs. There are many types of multiplexers available on the market, ranging from basic pass/standby type devices, to one with intelligent functions such as time-based (time-division) multiplexing and frequency-dependent multiplexing.

Demultiplexer, also known as a demux, is an analog switch that is used to route one signal from one output to many inputs. The demultiplexer is usually implemented as a multiple pole, single throw switch (MPST). Demultiplexers are used to distribute signals from one input to multiple outputs. The number of outputs can range from two to multiple. There are also demultiplexers with intelligent functions such as time-based (time-division) multiplexing and frequency-dependent multiplexing.

The PS391ESEE is an example of an analog switch used for signal routing and switching applications. It is a single pole, single throw (SPST) switch. The PS391ESEE can be used to selectively route one or more signals to one output. It features a low on-resistance of 0.4 Ohm and a low off-state leakage current of 4uA. It is available in a compact 3mm2 package and is suitable for reflow soldering. The PS391ESEE is specified over the -55°C to +125°C temperature range and is available in a wide range of tolerances and voltage ranges.

Analog switches find application in a variety of areas, from consumer-electronics, automotive and telecom applications to medical, industrial, and military systems. They can be used in applications such as buffering digital signals to lower frequency outputs or distributing audio/video signals. Multiplexers and demultiplexers can also be used for a variety of applications, such as routing multiple signals to different destinations or distributing a single input to multiple outputs. The PS391ESEE is an example of a versatile analog switch suitable for many applications.

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