SUPPLY-VOLTAGE SUPERVISORS

DESCRIPTION

The UTC UTL7712 family of integrated-circuit supply-voltage

supervisors is designed specifically for use as reset controllers in

microcomputer and microprocessor systems. The supply-voltage

supervisor monitors the supply for undervoltage conditions at the

SENSE input. During power up, the RESET output becomes active

(low) when VCC attains a value approaching 3.6V. At this point

(assuming that SENSE is above VIT+), the delay timer function

activates a time delay, after which outputs RESET and RESET go

inactive (high and low, respectively). When an undervoltage

condition occurs during normal operation, RESET and RESET go

active.

FEATURES

* Power-On Reset Generator

* Automatic Reset Generation After Voltage Drop

* Wide Supply-Voltage Range

* Precision Voltage Sensor

* Temperature-Compensated Voltage Reference

* Externally Adjustable Pulse Duration