CXDR75120/CXDR75121 are microprocessor (μP) supervisory circuits used to monitor the power supplies in μP and digital systems. They provide excellent circuit reliability and low cost. These circuits p

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The CXDR75120/CXDR75121 are microprocessor (μP) supervisory circuits used to monitor the power supplies in μP and digital systems. They provide excellent circuit reliability and low cost. These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, with hysteresis keeping it asserted for time delay determined by externally programmable time delay generator after VCC has risen above the reset threshold. The CXDR75121L has an open-drain output stage, while the CXDR75120 have push-pull outputs. The GCXDR75121’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The GCXDR75120 has an active-low RESET output, while the GCXDR75120 has an active-high RESET output. The outputs are guaranteed to be in the correct logic state for VCC down to 0.8V. The CXDR75120/CXDR75121 are available in 5-pin TSOT-23-5 package.

   产品特点 返回TOP90i嘉泰姆

„ Precision Monitoring Voltage of +2.2V and +3.7V 90i嘉泰姆

„ Fully Specified Over Temperature 90i嘉泰姆

„ Available in Three Output Configurations Push-Pull RESET Output (CXDR75120L) Push-Pull RESET Output (CXDR75120H) Open-Drain RESET Output (CXDR75121L) 90i嘉泰姆

„ Reset Deassert Time Smaller than 100μs when VCC Higher than Monitor Voltages (CD Pin Floating) 90i嘉泰姆

 „ Externally Programmable Time Delay Generator 90i嘉泰姆

„ 27μA Supply Current at VCC=3.3V 90i嘉泰姆

„ Guaranteed Reset Valid to VCC = 0.8V 90i嘉泰姆

„ TSOT-23-5 Packages 90i嘉泰姆

„ 2% Threshold Accuracy90i嘉泰姆

   应用范围 返回TOP90i嘉泰姆

„ Computers 90i嘉泰姆

„ Controllers 90i嘉泰姆

„ Intelligent Instruments 90i嘉泰姆

„ Critical μP and μC Power Monitoring 90i嘉泰姆

„ Portable / Battery-Powered Equipment 90i嘉泰姆

„ Automotive90i嘉泰姆

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