Datasheet4U Logo Datasheet4U.com

LM810 Datasheet 3-pin Microprocessor Reset Circuits

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM809/LM810 3-Pin Microprocessor Reset Circuits September 1999 LM809/LM810 3-Pin Microprocessor Reset.

General Description

The LM809/810 microprocessor supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems.

They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.

The function of the LM809/810 is to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold.

Key Features

  • Precise monitoring of 3V, 3.3V, and 5V supply voltages Superior upgrade to MAX809/810 Fully specified over temperature 140ms min. Power-On Reset pulse width, 240ms typical Active-low RESET Output (LM809) Active-high RESET Output (LM810) n Guaranteed RESET Output valid for VCC≥1V n Low Supply Current, 15µA typ. n Power supply transient immunity n n n n.

LM810 Distributor