MAX14979EETX+T

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MAX14979EETX+T is a special purpose analog switch, which belongs to the interface group of electronic components. It is a low on-resistance single-pole single-throw (SPST) analog switch, integrated with an N-channel MOSFET. This switch works with a positive supply voltage, which can vary according to different applications. With the help of two complementary logic MOSFETs, MAX14979EETX+T is capable of providing great electrical noise protection.

Application Fields

The MAX14979EETX+T’s application fields mainly include: power line isolation, medical equipment isolation, analog input isolation, RF/microwave signal switching, laboratory equipment isolation, ground loop isolation and many others.

Working Principle

MAX14979EETX+T’s working mainly based on the on/off control of a MOSFET. When the logic input voltage is high, the gate voltage of the MOSFET is also high, and the MOSFET is turned on. When the logic input voltage is low, the gate voltage of the MOSFET is also low, and the MOSFET is turned off. This process is called switching. It is applied to various applications to provide electrical isolation, or to making low-resistance connections or high resistance connections between two points.

The hardware inside MAX14979EETX+T is simple, which consists of two complementary MOSFETs. The logic input can be either a low logic level or a high logic level. When the logic input voltage is high, the low side gate voltage will be pulled down and the low side MOSFET will be turned on. The high side MOSFET will also be turned on due to the positive potential buildup between its drain and source nodes. This structure can provide better noise isolation while switching is happening.

Apart from switching application, MAX14979EETX+T can be used as a current-limiting device - the low side MOSFET can be used to limit the current passing through the high side MOSFET, thanks to its low on-resistance. With 10 mOhms of on-resistance, MAX14979EETX+T is capable of providing great current-limiting capabilities in some given situations.

In summary, MAX14979EETX+T belongs to the special purpose group within the analog switches. It is widely used in various applications, from power line isolation to laboratory equipment isolation. Its simple internal structure, together with its 10 mOhms on-resistance and great electrical noise protection, make it a really valuable component in many industries.

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