The DS1821S+TR from Analog Devices/Maxim Integrated is a specialized integrated circuit designed to provide precise temperature sensing and thermostat control functionality in a compact form factor. This device belongs to the specialized ICs category within the broader integrated circuits family, engineered to address the critical challenge of accurate temperature monitoring and automated thermal management in electronic systems where space constraints and reliability are paramount concerns.
Packaged in a standard SOP8 (Small Outline Package, 8-pin) configuration, this component offers an optimal balance between functionality and board space efficiency, making it particularly suitable for applications where PCB real estate is limited. The device typically functions as a digital thermometer and thermostat, capable of measuring temperature with high precision while providing programmable temperature alarm outputs, addressing the design challenge of maintaining thermal stability without requiring complex external circuitry or microcontroller intervention.
The primary advantages of the DS1821S+TR include its integrated approach to temperature management, eliminating the need for separate sensing and control components, its digital interface that simplifies system integration, and its ability to operate autonomously once configured, reducing processor overhead in embedded systems. The device offers user-programmable temperature thresholds, non-volatile storage for settings, and typically operates across industrial temperature ranges, making it robust for demanding environments.
This temperature sensing IC finds extensive application in computer thermal management systems, industrial process control equipment, environmental monitoring stations, HVAC systems, battery charging circuits, telecommunications equipment, and any embedded system requiring reliable over-temperature protection or temperature-dependent control functions. Its compatibility extends to various microcontroller platforms through standard digital communication protocols, allowing seamless integration with existing system architectures.
Equivalent and alternative models include the DS1821+ (non-tape and reel version), DS1620 and DS1631 from the same manufacturer offering similar functionality with slight specification variations, LM75 series from Texas Instruments, ADT75 from Analog Devices, TCN75 from Microchip Technology, and STLM75 from STMicroelectronics, all providing comparable digital temperature sensing capabilities with varying degrees of accuracy, resolution, and interface options to suit different application requirements.
DS1821S+TR Key Technical Attributes
Manufacturer Part Number: DS1821S+TR
Package Type: SOP8
Main Category: Integrated Circuits (ICs)
DS1821S+TR Packing Size
The DS1821S+TR is presented in a SOP8 (Small Outline Package with 8 pins) configuration, designed to ensure efficient space utilization in densely packed circuit boards. This specialized IC is constructed using high-quality materials to provide robust thermal management and reliable electrical connectivity. The SOP8 package offers clear pin identification, reducing assembly errors, and contributes to the device’s stable electrical characteristics under varying operational environments.
DS1821S+TR Application
DS1821S+TR is ideally suited for applications requiring temperature sensing and control in industrial, commercial, and consumer electronic devices. It excels in thermal monitoring, HVAC systems, process control, and other scenarios where accurate temperature measurement is crucial for safe and efficient operation.
DS1821S+TR Features
The DS1821S+TR boasts a fully digital temperature sensor within a compact SOP8 form factor, providing precise Celsius temperature measurements. It features programmable thermostat settings, allowing for flexible temperature threshold management and system customization. The device supports 1-Wire communication, enabling simple, cost-effective integration with microcontrollers and reducing wiring complexity. Its unique pin configuration streamlines circuit design and enhances response speed. Moreover, the IC demonstrates outstanding long-term stability and minimal calibration requirements, ensuring consistent performance throughout its service life. The DS1821S+TR’s high resolution and low power consumption make it suitable for battery-powered and energy-sensitive applications.
DS1821S+TR Quality and Safety Features
DS1821S+TR integrates rigorous electrostatic discharge (ESD) protection and robust construction to safeguard against voltage spikes and environmental stress. Its highly stable thermal characteristics and certified manufacturing process ensure reliable operation even in demanding conditions. Each unit follows strict quality control standards, resulting in trustworthy and consistent device performance and longevity.
DS1821S+TR Compatibility
This specialized IC is compatible with a broad range of microcontroller families and digital logic systems that support the 1-Wire protocol. Thanks to its standard SOP8 footprint, it can be seamlessly mounted on existing circuit designs that require temperature sensing or control features. DS1821S+TR’s programmable nature enhances its adaptability to various temperature monitoring and managing systems.
DS1821S+TR Datasheet PDF
Our website provides the most authoritative and up-to-date datasheet PDF for the DS1821S+TR product model. We strongly recommend customers to download the datasheet directly from the current page for in-depth specifications, design guidelines, and application information. Access to accurate documentation is vital for the effective use and integration of this device.
Quality Distributor
IC-Components is a premium distributor of Analog Devices / Maxim Integrated products, offering genuine DS1821S+TR specialized ICs. Customers are invited to request a quote on our website to benefit from competitive pricing, verified supply, and exceptional service. Choose IC-Components for trusted sourcing, fast response, and reliable support for your electronic component needs.



