DS1816

Automatically restarts a microprocessor after power failure
Maintains reset for 150 ms after VCC returns to an in-tolerance condition
Reduces need for discrete components
Precision temperature-compensated voltagereference and voltage sensor
Accurate 5%, 10% or 20% power monitoring
 20% tolerance for use with 3.0-volt systems
Low-cost TO-92 or space saving SOT-23 packages available
Efficient open-drain output with internal 5 kΩ=pull-up resistor
Operating temperature -40°C to +85°C

Voltage on VCC Pin Relative to Ground ..................-0.5V to +7.0V
Voltage on RST Relative to Ground .................-0.5V to VCC +0.5V
Operating Temperature..................................... -40°C to +85°C
Storage Temperature ......................................-55°C to +125°C
Soldering Temperature............................. 260°C for 10 seconds

The DS1816 EconoReset uses a precision temperature reference and comparator circuit to monitor the status of the power supply (VCC). When an out-of tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 150 ms to allow the power supply and processor to stabilize.