The FM803MS3X is a simple reset/power-on reset IC designed for power management and supervision applications. It features an open drain or open collector output and operates with a voltage threshold of 4.38V.

• Reset Timeout: 140ms minimum
• Reset Signal: Active Low
• Mounting: Surface Mount
• Package: TO-236-3, SC-59, SOT-23-3

The FM803MS3X is an obsolete product in the Fairchild/ON Semiconductor lineup, indicating that it may not be readily available in the market. However, it still offers reliable performance for designs that require a simple reset/power-on reset function.