STWD100YNYWY3F ST Supervisors

The STWD100YNYWY3F is a window watchdog timer from STMicroelectronics in SOT-23-5 surface-mount package, designed to monitor system operation with precise timing windows for microcontroller supervision. For selection, verify supply voltage range, watchdog timeout period for open and closed window timing, reset output polarity (active-low open-drain), low supply current for power-sensitive designs, and operating temperature from -40°C to +125°C. Features include programmable watchdog window timing, enable pin for watchdog control, and excellent transient immunity. Ideal for safety-critical microprocessor and microcontroller systems requiring reliable watchdog supervision with both early warning (closed window) and timeout (open window) detection, automotive electronics (ASIL-B compliant systems), industrial controllers, medical equipment, and any system requiring IEC 60730 compliance for functional safety where software execution must be verified within precise timing constraints. In stock at HL Electronics – request a quote for fast delivery.