DS1818

Voltage on V_CC Pin Relative to Ground ··········-0.5V to +7.0V
Voltage on RST Relative to Ground ········-0.5V to +5VCC +0.5V
Operating Temperature ················-40°C to +85°C
Storage Temperature ················ -55°C to +125°C
Soldering Temperature ·············260°C for 10 seconds
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

The DS1818 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 state. When V_CC 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.

The DS1818 also monitors a pushbutton on the reset output. If the reset line is pulled low, a reset is generated upon release and the DS1818 output will be held in reset output low for typically 150 ms.