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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 (G696L) Push-Pull RESET Output (G696H) Open-Drain RESET Output (G697L) Externally Programmable Time Delay Generator 14µA Supply Current Guaranteed Reset Valid to VCC = 0.8V Power Supply Transient Immunity 5 pin SOT-23-5 or TSOT-23-5 Packages 2% Threshold Accuracy
Applications
Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable / Battery-Powered Equipment Automotive General Description The G696/G697 are microprocessor ( µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost and adjustments when used with +5V, +3.3V, +3.0V- powered circuits. These circuits perform a single function: they assert a reset signal whenever the V CC supply voltage declines below a preset threshold, with hysteresis keeping it asserted for time delay determined by externally pro- grammable time delay generator after V CC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The G697L has an open-drain output stage, while the G696 have push-pull outputs. The G697L ’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than V CC. The G696L have an active-low RESET output, while the G696H has an active-high RESET output. The reset com- parator is designed to ignore fast transients on V CC, and the outputs are guaranteed to be in the correct logic state for V CC down to 0.8V. Low supply current makes the G696/G697 ideal for use in portable equipment. The G696/G697 are avail- able in 5-pin SOT23-5 or TSOT-23-5 packages. Pin Configuration Typical Application Circuit RESET (RESET) VCC SOT-23-5/TSOT-23-5 G696/G697 NC43GND CD ()is for G696H *G697 ONLY RESET INPUT GND µP VCC RESET (RESET) GND G696/G697 VCC CD VCC CD Rpull-up* ICC may increased at high TA, Therefore, can not connect Resistors to VCC to prevent Icc abnormal behavior at high T A. RESET (RESET) VCC SOT-23-5/TSOT-23-5 G696/G697 NC43GND CD ()is for G696H *G697 ONLY RESET INPUT GND µP VCC RESET (RESET) GND G696/G697 VCC CD VCC CD Rpull-up* ICC may increased at high TA, Therefore, can not connect Resistors to VCC to prevent Icc abnormal behavior at high T A. RESET (RESET) VCC SOT-23-5/TSOT-23-5 G696/G697 NC43GND CD ()is for G696H *G697 ONLY RESET INPUT GND µP VCC RESET (RESET) GND G696/G697 VCC CD VCC CD Rpull-up* ICC may increased at high TA, Therefore, can not connect Resistors to VCC to prevent Icc abnormal behavior at high T A.