SP809 Datasheet (Exar) - 3 Pin Microprocessor Supervisor Circuit

SP809, 3 Pin Microprocessor Supervisor Circuit

The SP809/SP810 are low power microprocessor (μP) supervisory circuits used to monitor power supplies in μP and digital systems.

They provide applications with benefits of circuit reliability and low cost by eliminating external components.

If the VCC supply voltage falls below preset threshold then

SP809 Features

* Ultra Low Supply Current 1µA (typ)

* Guaranteed Reset valid to VCC = 0.9V

* 140ms Power-On Reset Pulse Width

* Internally Fixed Threshold 2.3V, 2.6V, 2.9V, 3.1V, 4.4V, 4.6V

* 1.5% Voltage Threshold Tolerance

* 3 Pin SOT-23 Package Part Number SP809N