LM77 Datasheet | National Semiconductor

LM77 9-Bit + Sign Digital Temperature Sensor and Thermal Window parator with Two-Wire Interface June 1999 LM77 9-Bit + Sign Digital Temperature Sensor and Thermal Window parator with Two-Wire Interface General Description The LM77 is a digital temperature sensor and thermal window parator with an I2C™ Serial Bus interface. The window-parator architecture of the LM77 eases the design of temperature control systems conforming to the ACPI (Advanced Configuration and Power Interface) specification for personal puters. The open-drain Interrupt (INT) output bees active whenever temperature goes outside a programmable window, while a separate Critical Temperature Alarm...