General Description
The G680/G681 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. High- and Low- voltage thresholds can be adjusted independently, allowing for wide hystere sis. Voltage detection thresholds are accurate to 2%. These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below the low-voltage threshold, keeping it asserted for at least 140ms after VCC has risen above the high-voltage threshold.

FEATUREs
High ±2% Voltage Threshold Accuracy
Independently Adjustable High- and Low Voltage Thresholds
Fully Specified Over Temperature
Available in Three Output Configurations
  Push-Pull RESET Output (G680L)
  Push-Pull RESET Output (G680H)
  Open-Drain RESET Output (G681L)
„140ms min Power-On Reset Pulse Width
4µA Supply Current
Power Supply Transient Immunity
5-Pin SOT23-5 Packages

APPLICATIONs
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive