GS810C

GS809C and GS810C New Product Vishay formerly General Semiconductor Microprocessor Reset Monitors Pin Configuration SOT-23 (Top View) GND 1 3 Reset Output 2 Vcc Description The GS809C and 810C are system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required. When the processor power supply voltage drops below the reset threshold, the reset output is driven active, in less than 40µs (TD1). Reset is maintained active for a time period (TD2), after the Vcc rises above the threshold voltage. To prevent jitter, the reset threshold voltage has a built-in hysteresis of 0.4% of VTH. The GS809C has an active-low reset output, while the GS810C has an active-high reset output. Both devices have push/pull output drives. The reset signal is guaranteed valid, down to Vcc = 1.0V. Fig. 1 – Typical Application Diagram VCC VCC GS809C Reset VCC Processor Reset Input GND Low supply current of 3µA makes these devices well suited for battery powered applications. They are designed to reject fast transients from causing false resets. Both devices are available in a space-saving SOT-23 package. GND Applications Computers Battery Powered Equipment Critical uProcessor and uController power supply monitoring Features Tight reset voltage tolerances ± 1.5% 4 reset active timeout period options Low quiescent current: < 3µA 9 reset threshold options from 2.1V to ...