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LM77 Datasheet 9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator

Manufacturer: Texas Instruments

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General Description

The LM77 is a digital temperature sensor and thermal window comparator with an I2C Serial Bus interface.

The window-comparator architecture of the LM77 eases the design of temperature control systems conforming to the ACPI (Advanced Configuration and Power Interface) specification for personal computers.

The open-drain Interrupt (INT) output becomes active whenever temperature goes outside a programmable window, while a separate Critical Temperature Alarm (T_CRIT_A) output becomes active when the temperature exceeds a programmable critical limit.

Overview

LM77 www.ti.com SNIS103F – JUNE 1999 – REVISED MARCH 2013 LM77 9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface Check for Samples:.

Key Features

  • 1.
  • 2 Window Comparison Simplifies Design of ACPI Compatible Temperature Monitoring and Control.
  • Serial Bus Interface.
  • Separate Open-Drain Outputs for Interrupt and Critical Temperature Shutdown.
  • Shutdown Mode to Minimize Power Consumption.
  • Up to 4 LM77s Can be Connected to a Single Bus.
  • 9-bit + Sign Output; Full-Scale Reading of Over 128°C.
  • SOIC and VSSOP 8-lead Packages.

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