MAXIM INTEGRATED / ANALOG DEVICES MAX821LUST Microprocessor Voltage Supervisor

The MAX821LUST is a microprocessor voltage supervisor with a pin-selectable power-on reset timeout delay, housed in a 4-pin SOT-143 package. It monitors power supplies in microprocessor and digital systems, ensuring reliable operation. The device asserts a reset signal whenever the supply voltage falls below a preset threshold and maintains the reset for a specified delay after voltage recovery. It features a reset comparator designed to ignore fast transients, low supply current of approximately 2.5µA at 25°C, and operates within a voltage range of 1.2V to 5.5V. The reset output is active-low and push-pull, with a reset threshold of 4.63V at 25°C. The timeout period varies depending on the reset resistor connection: 0.8ms when SRT is connected to GND, 32ms when connected to VCC, and 160ms when unconnected. The device operates over a temperature range of -40°C to 125°C and is suitable for system monitoring, consumer electronics, and portable devices.

View MAX821LUSTDatasheet [pdf]

Buy the Buy MAXIM MAX821LUST Microprocessor Voltage Supervisor Part Number MAX821LUST Online

Secure your electronic projects with the MAXIM MAX821LUST microprocessor voltage supervisor, offering a pin-selectable reset timeout delay and robust power monitoring. This compact 4-pin SOT-143 package ensures efficient, low-power performance for portable devices, consumer electronics, and system monitoring. Its reset threshold of 4.63V guarantees system stability during power fluctuations, while the selectable delay modes of 0.8ms, 32ms, and 160ms provide flexibility for various applications. Trust MAXIM's precision design to protect your circuits during power-up, brownout, and power-down conditions—order now for dependable system operation.

Order your MAXIM MAX821LUST microprocessor voltage supervisor today and ensure reliable power-on reset with flexible delay options for portable and digital systems.