SP809 Description
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 ponents. If the VCC supply voltage falls below preset threshold then a reset signal is asserted for at least 140ms after VCC has risen above the reset threshold.
SP809 Key Features
- Ultra Low Supply Current 1µA (typ.)
- Guaranteed Reset valid to VCC = 0.9V
- 140 ms Min. Power-On Reset Pulse Width
- Internally Fixed Threshold 2.3V, 2.6V, 2.9V, 3.1V, 4.0V, 4.4V, 4.6V
- Tight Voltage Threshold Tolerance: 1.5%
- Offered in a 3 Pin SOT-23 Package