DS1833

 Automatically restarts microprocessor after power failure 

Maintains active-high reset for 350 ms after V_CC returns to an in-tolerance condition 

Accurate 5%, 10% or 15% microprocessor 5V power supply monitoring 

Reduces need for discrete components  Precision temperature-compensated voltage reference and voltage sensor 

Low-cost TO-92 package or surface mount SOT-223 package 

 Internal 5k pull-up resistor 

Operating temperature of -40°C to +85°C

Voltage on V_CC Pin Relative to Ground          -0.5V to +7.0V
Voltage on I/O Relative to Ground          -0.5V to V_CC +0.5V
Operating Temperature                             -40°C to +85°C
Storage Temperature                              -55°C to +125°C
Soldering Temperature                     260°C for 10 seconds

The DS1833 EconoReset uses a precision temperature compensated reference and comparator circuit to monitor the status of the power supply (V_CC). When an out-of-tolerance condition is detected, an internal power fail signal is generated which forces reset to the active (high) state. When V_CC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 350 ms to allow the power supply and processor to stabilize.