MAX321ESA+T

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Interface technology is a key component in nearly all electronic equipment. The MAX321ESA+T is an integrated CMOS analog switch and multiplexer/demultiplexer. It is designed for low power, single-supply operation and to operate over an extended temperature range. It features omnidirectional switch or multiplexer/demultiplexer operation, with analog switches that can be controlled independently or simultaneously.

The MAX321ESA+T is a 3-channel device: a low-channel analog switch, a high-channel analog switch, and a multiplexer/demultiplexer. The low-channel analog switches are single-pole, double-throw (SPDT) configuration, while the high-channel analog switches are double-pole, double-throw (DPDT) configuration. The multiplexer/demultiplexer is a 4-switch network with dual-root inputs and dual-root outputs.

The MAX321ESA+T has very low on-resistance and off-leakage current. It is designed to operate from single-supply voltage of 3 V to 8.5 V and can handle a wide range of signals, such as digital signals, audio signals, video signals, and other sensitive signals. The device also has good distortion specifications and is capable of amplitude selection, further simplifying design.

The MAX321ESA+T is primarily used in applications such as audio/video switching, modems, medical imaging, motor control, and computer equipment. It is particularly useful in applications where low-power, low-distortion operation is important. The device is well suited for use in simulation, test, and measurement equipment, as well as other portable or battery-operated applications.

The MAX321ESA+T switch or multiplex/demultiplex is controlled by logic signals through an independent control pin for each switch. The device features three separate analog switches: a low-channel SPDT switch, a high-channel DPDT switch, and a multiplexer/demultiplexer. The SPDT switches have low switching times (230ps) and can be used for both low-frequency and high-frequency signals. The DPDT switches have a higher switching resistance (330ps) but are suitable for low-frequency signals only. The multiplexer/demultiplexer also has low switching times (150ps) and can be used for digital or analog signals.

The MAX321ESA+T offers low power consumption and fast settling time. The power consumption is just 2mA when enabled and around 1mA (typical) when disabled. The settling time is typically 25µs at VS = 4.5V and 50µs at VS = 6V. The device is ESD protected to exceed the requirements of JESD22-A114-B.

The MAX321ESA+T is a convenient and versatile solution for a wide range of applications. It offers low ON resistance, low OFF leakage current, fast switching times, and low power consumption. All this makes it an ideal solution for analog signal switching applications. The device is suitable for use in a variety of applications, from audio/video switching to medical imaging and motor control.

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