Rens Electronics

LM1801N

The LM1801 is an extremely low power comparator with a high current, open-collector output stage. The typical supply current is only 7mA, yet in its switched state the comparator can source or sink 0.5A. The LM1801 is designed to operate in a standby mode for 1 year, powered by a 9V alkaline battery. Provision is made for operation from supplies of up to 14V. An internal 14.5V zener clamp may be used for supply regulation in line operated applications. The low battery detector and stand-by current drain are externally programmed by resistors. A parallel output is provided to ``OR'' as many as 9 comparators, and a feedback pin allows adding hysteresis or latching functions. Two on-chip voltage sources can serve as bias points for the comparator inputs or as references for other circuit functions