MAX6388XS27D1-T

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The MAX6388XS27D1-T is a high-performance supervisor and voltage monitor integrated circuit (IC) designed for use in applications and systems requiring an economical and versatile reset generator, voltage monitor (VM) and push-button reset circuit. It combines intricate circuitry, a low-voltage reset threshold, fast RESET assertion, an adjustable VM comparator, a push-button reset circuit, fault-tolerant push-button reset debouncing and precision voltage references in a small SOT23-5 package.

The reset generator in the MAX6388XS27D1-T safeguards microprocessors and other related peripheral components against system faults caused by errors in the power supply or other effects. As soon as a power supply drops below a preset threshold known as the reset/power-on-reset (POR) threshold, the reset generator output, RESET, becomes active. The reset output is held active until the supply voltage has been above the reset threshold voltage for 400µs (max). The MAX6388XS27D1-T has a wide range of operating voltages, from 2.6V to 5.5V, and a low-voltage reset/power-on reset threshold at 2.28V (max). The reset generator also reduces the likelihood of false reset activation due to undershoots or jitters in the power supply. The reset generator is disabled when the reset input, or manual reset, is pulled low.

The VM of the MAX6388XS27D1-T provides a monitorable threshold to detect over-voltage and under-voltage service conditions on the power supply. A precision voltage reference has been integrated and is user adjustable, allowing for a wide range of VM thresholds. The comparator has an independent open drain output which goes active when the voltage falls below the set VM threshold. This output can be used to detect low-voltage conditions and trigger shutdown logic or power supply redundancy switchovers.

The MAX6388XS27D1-T has an integrated push-button reset circuit that allows a manual reset trigger in conjunction with the reset generator. This circuit is designed to prevent false reset activation as it verifies the valid reset activation by first debouncing and then holding the reset assertion high for a minimum pulse width before releasing it.

The MAX6388XS27D1-T is available in the space-saving 5-pin SOT23-5 package and is rated for operation over an extended temperature range of -40°C to +85°C. It requires no external components for operation and is self-contained with a power-on reset comparator, voltage regulator, voltage detector and manual reset push button. It is widely used for reset and voltage monitor applications in microprocessor-based systems, routers and telecom systems, radios, automotive, industrial and medical applications.

In conclusion, the MAX6388XS27D1-T supervisor and voltage monitor is a tool to ensure the safety of microprocessors and other related peripheral components against system faults caused by errors in the power supply, such as voltage drops and spikes. The reset generator prevents false reset activation due to undershoots or jitters in the power supply, and the VM helps detect over-voltage and under-voltage service conditions on the power supply. The manual reset push-button of the MAX6388XS27D1-T provides a manual reset trigger, and the fault-tolerant push-button reset debouncing provides reliable and safe reset operation. The MAX6388XS27D1-T is available in a space-saving 5-pin SOT23-5 package and is rated for operation over an extended temperature range. It is widely used in microprocessor-based systems, routers and telecom systems, radios, automotive, industrial, and medical applications.

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