CAT809HTBI-T3

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Power management integrated circuits are semiconductor ICs that regulate and monitor low-voltage electrical power within a given system. They provide the system with sufficient power to operate, while also providing the necessary protection features, which can be critical in the context of board-level design. The CAT809HTBI-T3 is a 3.3V fixed voltage supervisor specializing in robust system resetting, ensuring smooth and reliable startup sequences, while providing protection against latches, locks, and glitches in the system.

The CAT809HTBI-T3 is a family of ultra-low supply current, supervisory circuits designed to monitor voltages from 3.3V. The device provides an accurate, power-on reset signal when the monitored voltage falls below a selectable trip point between 2.3V and 3.3V. The reset signal asserts for a minimum duration of 140ms after power is applied, regardless of the rate of rise of VCC. This ensures a reliable power-on reset circuitry for dependable system power-up and power-down sequences. Additionally, the device can be reset manually by applying a low voltage pulse to the MR pin.

The CAT809HTBI-T3 is specifically designed to eliminate unexpected system resets during brown-outs, glitches and noise. The device monitors VCC while looking for undershoots below the preset trip point. If the undervoltage condition persists for more than an additional 60ms, the device will assert its active low reset signal. This helps prevent errant resets caused by glitches, incurred during heavy system switching or due to noise. The reset output of the CAT809HTBI-T3 is in a push-pull configuration, featuring active low reset and output drivers. This has the advantage of reaching the low-level voltage faster and provides a better interface for resetting other devices.

The CAT809HTBI-T3 offers a variety of application fields ranging from digital logic, microprocessors, memory systems, and data processing systems. The device can be used to provide automatic system resetting on power-up or power-off sequences, eliminating the need to continuously monitor resetting signals. It also provides over voltage and under voltage protection, allowing it to be used as a watchdog timer when voltage is critical. The CAT809HTBI-T3 is an ideal solution for a wide range of applications in the digital computing, industrial control, and data processing industries.

The CAT809HTBI-T3 is designed to work with a wide variety of power sources and systems, from the simplest 5V logic level circuits to the more complex 12V systems. The device is highly integrated and has a wide operating temperature range from -40°C to +85°C, making it suitable for most industrial applications. The device also has selectable trip points for minimum and maximum reset points and offers a monostable mode for reset operations. It is designed to be space efficient and is only available in an 8-pin plastic SOIC package.

The CAT809HTBI-T3 is an ideal device for providing the necessary resetting protection and spurious resetting protection in many digital systems. The device offers accurate and reliable resetting, while also providing over and undervoltage protection. The device offers a wide variety of application fields and is compatible with a wide range of power sources and systems. The device is highly integrated and offers a wide operating temperature range and selectable trip points, making it an ideal solution for a wide range of applications in the digital computing, industrial control, and data processing industries.

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