Digital temperature sensors are not a single brand but a category of devices used across industries for precise temperature monitoring. Major manufacturers include Texas Instruments (USA), Maxim Integrated (USA, now part of Analog Devices), and STMicroelectronics (Switzerland). These sensors serve sectors like HVAC, automotive, medical, and industrial automation, offering products such as IC-based sensors (e.g., TMP117 by TI), thermocouples, and RTDs. Companies like Honeywell (USA) and Omron (Japan) also provide integrated solutions for critical applications.