X40414S8-A Integrated Circuits (ICs)

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The X40414S8-A is a CMOS supervisor with full static protection that monitors two supply voltages and one ground line for successful power-up and power-down occasions. An integrated voltage monitor and sequence logic is used with threshold and reset detecting circuits which provides protection capabilities. This supervisor is ideal for use in PCs, servers, work stations and other system applications.

The X40414S8-A has some distinct features that make it one of the best solutions for supervisory functions. It is a low power, 3-pin device with a dual voltage monitoring feature that can monitor two supply voltages and one ground line. This supervisor is an integrated voltage monitor and sequence logic with a threshold and reset detection circuit providing static protection capabilities. It also includes an open-drain reset output delay of 500ms (typical) with precision reset threshold hysteresis, overvoltage and undershoot protection.

In addition, the X40414S8-A features two trip points for sequencing of power supplies, low power consumption (consumes as little as 3.2µA), and compatibility with 5V and two-level logic systems. It operates over a wide temperature range and housed in a SOT23-3 package, the device eliminates external components to reduce design complexity and cost.

The X40414S8-A is suitable for monitoring a personal computing and communications systems, low-level equipment, personal communications, and security-related applications. It effectively monitors that the system is in a valid power range and provides robust protection against overvoltage/undershoot conditions, as well as brownout or power supply disruption.

The X40414S8-A supervisor operates in two primary modes – Power-Up and Power-Down. During the power-up mode, the supervisor monitors the rising supply voltage against the indicated reset threshold. Once the rising supply voltage reaches the reset threshold, it will generate a high output which will cause the reset output pin to become active. The reset output pin will be held active until the power rail settles within the defined thresholds. During the power-down mode, the supervisor monitors the voltage rail when it begins to fall. If the falling voltage rail reaches the defined under voltage lockout threshold, the supervisor will generate the reset signal, activating the reset output pin.

The X40414S8-A is an ideal solution for systems needing supply voltages feature reliable power-up Sequencing, and Overvoltage/Undervoltage Protection. For systems which need to monitor both a 5V and 3.3V supply rail, having robust reset protection from overvoltage and undervoltage conditions, and where low power consumption is important, the X40414S8-A is the perfect choice.

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