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The DS1721S+T&R is a digital thermometer and thermostat manufactured by Maxim Integrated. Below are the factual specifications, descriptions, and features:

Manufacturer:

MAXIM (Maxim Integrated)

Part Number:

DS1721S+T&R

Description:

The DS1721S is a digital thermometer and thermostat that provides 9-bit to 12-bit temperature readings with a resolution of 0.5°C. It communicates over a 2-wire serial interface (I²C-compatible) and can operate in thermostat mode with user-defined temperature trip points.

Key Features:

• Temperature Range: -55°C to +125°C
• Accuracy: ±2°C from -10°C to +85°C
• Resolution: Configurable (9 to 12 bits, default 9-bit)
• Interface: I²C-compatible 2-wire serial communication
• Thermostat Functionality: Programmable nonvolatile temperature trip points (THIGH and TLOW)
• Power Supply: 3.0V to 5.5V
• Low Power Consumption:
• 1mA active current (typical)
• 750nA standby current (typical)
• Package: 8-pin SOIC (T&R indicates Tape and Reel packaging)
• Nonvolatile Memory: Stores temperature settings during power loss
• Alarm Output: Programmable interrupt for out-of-range conditions

Applications:

• System temperature monitoring
• Environmental control systems
• Industrial process control
• Consumer electronics
• HVAC systems

This information is strictly factual and based on the manufacturer's datasheet.