STMicroelectronics STM705/706/708/813L Supervisors

STMicroelectronics STM705/706/708/813L Supervisors are self-contained devices which provide microprocessor supervisory functions. A precision voltage reference and comparator monitors the V_CC input for an out-of-tolerance condition. When an invalid V_CC condition occurs, the reset output (RST) is forced low (or high in the case of RST). These devices also offer a watchdog timer (except for STM707/708) as well as a power-fail comparator to provide the system with an early warning of impending power failure.

The STMicroelectronics STM705/706/708/813L Supervisors are available in a standard 8-pin SOIC package or a space-saving 8-pin TSSOP package. Typical applications include computers, controllers, intelligent instruments, critical μP power monitoring, terminals, base stations, medical equipment, and set-top boxes.

Features

5V operating voltage
Precision V_CC monitor
STM705/813L4.50V ≤ V_RST ≤ 4.75V
STM706/7084.25V ≤ V_RST ≤ 4.50V
RST and RST outputs
200ms (typ) t_rec
Watchdog timer - 1.6s (typ)
Manual reset input (MR)

Power-fail comparator (PFI/PFO)
Low supply current - 40μA (typ)
Guaranteed RST (RST) assertion down to V_CC=1.0V
Operating temperature:
- -40°C to +85°C (industrial grade)
- -40°C to +125°C (automotive grade for the STM706 only)
Lead-free and RoHS compliant