DS75LXS+

DS75LXS+ is a digital thermometer and thermostat with extended addressing. At power-up, the DS75LX defaults to 9-bit resolution for software compatibility with the LM75. Communication with the DS75LX is achieved through a simple 2-wire serial interface. Three tri-state address pins allow up to 27 DS75LX devices to operate on the same 2-wire bus, which greatly simplifies distributed temperature sensing applications. The DS75LX thermostat has a dedicated open-drain output (O.S.) and programmable fault tolerance, which allow 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 (TOS and THYST). It is used in applications such as any thermally sensitive system, cellular base stations, telecom switches and routers, and servers.

• Operating voltage range from 1.7V to 3.7V, thermostatic settings are user-definable
• Tri-state address pins allow up to 27 unique bus addresses
• Temperature measurements require no external components, thermostatic settings are user-definable
• Data is read/written through 2-wire serial interface (SDA and SCL pins)
• Bus timeout feature prevents lockup problems on 2-wire interface
• Multidrop capability simplifies distributed temperature-sensing applications
• Standby current is 13µA maximum at (1.7V ≤ VDD ≤ 3.7V, TA = -55°C to +125°C)
• Thermometer error is ±2.0°C maximum at (1.7V ≤ VDD ≤ 3.7V, TA = -55°C to +125°C)
• Operating temperature range from -55°C to +125°C
• 8-pin SO package

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