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G671L463T71UF Datasheet(PDF) 1 Page - Global Mixed-mode Technology Inc |
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G671L463T71UF Datasheet(HTML) 1 Page - Global Mixed-mode Technology Inc |
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1 / 13 page  Ver: 1.5 Dec 03, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw 1 G670/G671 Global Mixed-mode Technology Inc. Microprocessor Reset IC 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 (G670L) Push-Pull RESET Output (G670H) Open-Drain RESET Output (G671L) 2ms max Power-On Reset Pulse Width 14µA Supply Current Guaranteed Reset Valid to VCC = +1V Power Supply Transient Immunity No External Components 3-Pin SOT-23,TO-92 and SOT-89 Packages 2% Threshold Accuracy Applications Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable / Battery-Powered Equipment Automotive General Description The G670/G671 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. These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold. Reset thresholds suitable for operation with a variety of supply voltages are avail- able. The G671L has an open-drain output stage, while the G670 have push-pull outputs. The G671L’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The G670L have an active-low RESET output, while the G670H has an active-high RESET output. The reset com- parator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Low supply current makes the G670/G671 ideal for use in portable equipment. The G670/G671 are avail- able in 3-pin SOT-23, TO-92 and SOT-89 packages. Pin Configuration Typical Application Circuit RESET INPUT GND µP VCC RESET (RESET) GND G670/G671 VCC R PULL-UP V CC * *G671 only SOT-23 1 2 3 Top View 1 2 3 Top View 1 2 3 SOT-89 TO-92 13 2 Top View RESET INPUT GND µP VCC RESET (RESET) GND G670/G671 VCC R PULL-UP V CC * *G671 only SOT-23 1 2 3 Top View Top View 1 2 3 Top View 1 2 3 SOT-89 TO-92 13 2 Top View |
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