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Technical content
Features
Precision Monitoring of +3V, +3.3V, and +5V Power-Supply Voltages Fully Specified Over Temperature Available in Three Output Configurations Push-Pull RESET Output (G692L) Push-Pull RESET Output (G692H) Open-Drain RESET Output (G693L) 230ms Min Power-On Reset Pulse Width 14µA Supply Current Guaranteed Reset Valid to VCC = +1V Power Supply Transient Immunity No External Components Manual Reset Input SOT-143, SC-70-5(SOT-353) and SOT-23-5 Pack- age 2% Threshold Accuracy
Applications
Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable / Battery-Powered Equipment Automotive General Description The G692/G693 are microprocessor ( µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V- pow- ered circuits. The G692/G693 also provides a de- bounced manual reset input. These circuits perform a single function: they assert a reset signal whenever the V CC supply voltage declines below a preset threshold, keeping it asserted for at least 230ms after V CC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The G693L has an open-drain output stage, while the G692 have push-pull outputs. The G693L ’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The G692L have an active-low RESET output, while the G692H has an active-high RESET output. The re- set comparator is designed to ignore fast transients on V CC, and the outputs are guaranteed to be in the cor- rect logic state for VCC down to 1V. Low supply current makes the G692/G693 ideal for use in portable equipment. The G692/G693 are available in a SOT-143, SC-70-5(SOT-353), SOT-23-5 packages. Pin Configuration Typical Application Circuit RESET INPUT GND µP VCC RESET (RESET) GND G692/G693 VCC RPULL-UP VCC *G693 ONLY MR VCC SOT-143 4GND 2RESET (RESET) MR3 ()is for G692H VCC SC-70-5 (SOT-353) 5GND 3RESET (RESET) MR GND G692/G693 G692/G693 VCC SOT-23-5 5GND 3RESET (RESET) MR4 NC G692/G693 ICC may increased at high TA, Therefore, can not connect Resistors to VCC to prevent Icc abnormal behavior at high T A. RESET INPUT GND µP VCC RESET (RESET) GND G692/G693 VCC RPULL-UP VCC *G693 ONLY MR VCC SOT-143 4GND 2RESET (RESET) MR3 ()is for G692H VCC SC-70-5 (SOT-353) 5GND 3RESET (RESET) MR GND G692/G693 G692/G693 VCC SOT-23-5 5GND 3RESET (RESET) MR4 NC G692/G693 ICC may increased at high TA, Therefore, can not connect Resistors to VCC to prevent Icc abnormal behavior at high T A.