LM809M3-4.38/NOPB Datasheet PDF - TI

●The LM809M3-4.38/NOPB is a 3-pin Microprocessor Supervisory Circuit with active-low RESET output. The supervisory circuit can be used to monitor the power supplies in microprocessor and digital systems. It provides a reset to the microprocessor during power-up, power-down and brownout conditions. The function of the LM809 is to monitor the VCC supply voltage and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240ms after VCC rises above the threshold.

● Power supply transient immunity

● Fully specified over-temperature

● Ensured RESET output valid for VCC >= 1V

● Superior upgrade to MAX809 and MAX810

● 140ms Minimum power-ON reset pulse width

● 15µA Typical low supply current

● Green product and no Sb/Br