BUY DS36950V https://www.utsource.net/itm/p/794494.html
µP Supervisory with Manual Reset and Watchdog - Reset: Push/Pull Active-Low - TH: 2.93V, SOT23-5 package
The DS36950V is a 20-pin PLCC (Plastic Leaded Chip Carrier) integrated circuit manufactured by National Semiconductor. It is a low-power, low-voltage, low-cost, high-performance CMOS static RAM. Features: Low power consumption Low voltage operation High performance Low cost 20-pin PLCC package Applications: Automotive Industrial Consumer Medical Networking Telecommunications (For reference only)