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LM76CHM-5/NOPB
?1?C Temperature Sensor with Alert Function and I2C/SMBUS Interface 8-SOIC -55 to 150
LM76
www.ti.com SNIS109E –JANUARY 2000–REVISED MARCH 2013
LM76 ±0.5°C, ±1°C, 12-Bit+ Sign Digital Temperature Sensor and Thermal Window
Comparator with Two-Wire Interface
Checkfor Samples: LM76
1FEATURES DESCRIPTIONThe LM76isa digital temperature sensor and thermal
Window Comparison Simplifies Designof window comparator with anI2C Serial Bus interface
ACPI Compatible Temperature Monitoring and with an accuracy of ±1°C. This accuracy for the
Control. LM76CHM is specified for a −10°C to 45°C
• Serial Bus Interface temperature range. The LM76CHMis specified with accuracy ±0.5°Cat 25°C. The window-comparator
• Separate Open-Drain Outputs for Interrupt andarchitecture of the LM76 eases the design of
Critical Temperature Shutdown temperature control systems conformingto the ACPI
• Shutdown Modeto Minimize Power (Advanced Configuration and Power Interface)
Consumption specification for personal computers. The open-drain
Upto4 LM76s can be Connectedtoa Single Interrupt (INT) output becomes active whenever
Bus temperature goes outsidea programmable window,
while a separate Critical Temperature Alarm
• 12-bit+ Sign Output; Full-scale Readingof (T_CRIT_A) output becomes active when the
Over 127°C temperature exceedsa programmable critical limit.
The INT output can operatein eithera comparatoror
KEY SPECIFICATIONS event mode, while the T_CRIT_A output operatesin
Supply Voltage 5.0V comparator mode only.
Supply Current The host can program both the upper and lower limits the windowas wellas the critical temperature limit.
– OperatingProgrammable hysterisisas wellasa fault queue are
– 250µA (typ) availableto minimize false tripping. Two pins (A0, A1)
– 450µA (max) are available for address selection. The sensor
Shutdown powersup with default thresholdsof 2°C THYST, 10°C
TLOW, 64°C THIGH, and 80°C T_CRIT.
– 8µA (max)The LM76's 5.0V supply voltage, Serial Bus interface,
• Temperature +25ºC ±0.5ºC (max)12-bit+ sign output, and full-scale rangeof over
– Accuracy 127°C makeit ideal fora wide rangeof applications.
– –10ºCto +45ºC ±10°C (max) These include thermal management and protection
±1.0°C (max) applications in personal computers, electronic test
equipment, office electronics and bio-medical applications.
HVAC