The MAX809SN293D1T1G is a microprocessor reset monitor in 3 pin SOT-23 package. This cost effective microprocessor voltage supervisor has very low supply current. It is designed to monitor VCC in digital systems and provides a reset signal to host processor when necessary. The reset output is driven active within 10µs of VCC falling through reset voltage threshold. Reset is maintained active for a timeout period which is trimmed by factory after VCC rises above the reset threshold. The MAX809 is optimized to reject fast transient glitches on the VCC line. Low supply current of 0.5µA (VCC= 3.2V) makes this device suitable for battery powered applications, computers, embedded systems and critical microprocessor power supply monitoring applications.
Reset threshold voltage of 2.93V at TA = +25°C
Reset active timeout period from 1ms to 3.3ms
Push-pull active-low reset
Precision VCC monitor for 1.5V, 2.5V, 3V, 3.3V and 5V supplies
Active-low reset output valid to VCC = 1V
Compatible with hot plug applications
VCC transient immunity
VCC supply voltage from 1.2V to 5.5V at TA = -40°C to +105°C
Supply current of 0.8µA at TA = -40°C to +85°C and VCC = 5.5V
Wide operating temperature range from -40°C to 105°C
