DS75LV Datasheet

• Extend Performance Range with Low-Voltage, 1.7V to 3.7V Operating Range
• Maximize System Accuracy in Broad Range of Thermal Management Applications
  • Measures Temperature from -55°C to +125°C (-67°F to +257°F)
  • ±2°C Accuracy over a -25°C to 100°C Range
  • User-Configurable Resolution from 9 Bits (Default) to 12 Bits (0.5°C to 0.0625°C)
• Easy Upgrade to LM75: Pin and Software Compatible
• Simplify Distributed Temperature-Sensing Applications with Multidrop Capability
  • Up to Eight DS75LVs Can Operate on 2-Wire Bus
• Increase Reliability and System Robustness
  • Internally Filtered Data Lines for Noise Immunity (50ns Deglitch)
  • Bus Timeout Feature Prevents Lockup on 2-Wire Interface
• Minimize Power Consumption with Built-In Shutdown Mode
• Flexible User-Defined Thermostatic Modes with Programmable Fault Tolerance

• Any Thermally Sensitive System
• Cellular Base Stations
• Office Equipment
• Personal Computers

The DS75LV low-voltage (1.7V to 3.7V) digital thermometer and thermostat provides 9-, 10-, 11-, or 12-bit digital temperature readings over a -55°C to +125°C range with ±2°C accuracy over a -25°C to +100°C range. At power-up, the DS75LV defaults to 9-bit resolution for software compatibility with the LM75. Communication with the DS75LV is achieved through a simple 2-wire serial interface.

The DS75LV thermostat has a dedicated open-drain output (O.S.) and programmable fault tolerance, which allows the user to define the number of consecutive error conditions that must occur before O.S is activated. There are two thermostatic operating modes that control thermostat operation based on user-defined trip-points (T_OS and T_HYST).