MAX14932DASE+T

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Digital isolators are a type of semiconductor device widely used for electrical isolation between functional blocks - isolated communication channels, protective circuits for isolating higher voltage signals, and microprocessor I/O interfaces. The MAX14932DASE+T is a wide-temperature, high-voltage digital isolator that provides a 2-channel ISOCHRONIS (interfaceless double-detection) channel to help simplify safety isolation designs. This device is commonly used in markets such as medical, industrial, networking, instrumentation, and communications.

In operation, the MAX14932DASE+T isolates system-level microprocessors or peripheral circuits, allowing only differential signals to be transmitted. This isolation eliminates ground loops and reduces picking up of environmental interference, allowing for a reliable communication protocol with high EMI robustness. The MAX14932DASE+T also helps to reduce system footprints, enabling a more reliable system design.

The 2-channel ISOCHRONIS provides enhanced signal detection, with 2 separate detection circuits that detect any signal transitions on the input side and, once a valid input is detected, maintain the output signal levels until a new valid state is detected on the input side. This unique feature helps minimize the possibility of missing valid transitions due to environmental interference.

The MAX14932DASE+T can support numerous signal types, including AC-coupled differential signals, NRZ signals, as well as PECL, LVDS, and LVPECL signals, up to 1.8V. The device can operate in temperatures from -40 to +125ºC, making it ideal for applications in extreme or harsh environments.

The maximum input and output data rates of the MAX14932DASE+T are 125 Mbps. The digital isolator offers a minimum air-gap insulation of 1 mm (100mm creepage) meeting the requirements of many industrial applications. The device also supports a common-mode range from -1000V to +1700V, and data transmissions between the two channels are independent—no common clock input is required; this makes the design simpler and increases system clock skew immunity. In addition, the MAX14932DASE+T features a level shifter integrated on the same IC, so no additional level-shifting components are needed.

The MAX14932DASE+T channels are isolated through a galvanic barrier, providing isolation of up to 6kVrms, even at very low temperatures. This device also features integrated ESD and overvoltage protection—ensuring that accidental overvoltages will not affect the normal operation of the circuit. The MAX14932DASE+T also features latchup protection, which helps to prevent any unintended current or voltage flow during abnormal operating conditions.

In summary, the MAX14932DASE+T is a cost-effective and efficient digital isolator, ideally suited for applications that require latchup protection, low power, and high reliability. It enables the easy implementation of electrical isolation, and allows for transmission of multiple signal types with high noise immunity. This makes the MAX14932DASE+T an ideal isolator for applications ranging from medical to networking, as well as for instrumentation and communications.

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