General Description
The AS1916 - AS1918 microprocessor supervisory circuits were designed to generate a reset when the monitored supply voltage falls below a factory-trimmed threshold. The reset remains asserted for a minimum timeout period after the supply voltage stabilizes.
Guaranteed to be in the correct state for VCC higher than +1.0V, these devices are ideal for portable and battery-powered systems with strict monitoring requirements.
The devices feature factory-trimmed thresholds to monitor a supply voltage between 1.8 and 3.6V.

Key Features
■ VCC Supervisory Range: +1.8 to +3.6V
■ Guaranteed Reset Valid Down to VCC = +1.0V
■ Reset Timeout Delay: 215ms
■ Manual Reset Input
■ Three Reset Output Types
    - Active-Low Push/Pull (AS1916)
    - Active-High Push/Pull (AS1917)
    - Active-Low Open-Drain (AS1918)
■ Watchdog Timeout Period: 1.5s
■ Immune to Fast Negative VCC Transients
■ External Components Not Required
■ Operating Temperature Range: -40 to +125°C
■ 5-pin SOT23 Package

Applications
    The devices are ideal for portable and battery-powered systems, embedded controllers, intelligent instruments, automotive systems, and critical CPU monitoring applications.