产品概述 返回TOP99H嘉泰姆

The CXDR75122/CXDR75123 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 +2.5V, +3.0V powered circuits. 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. Reset thresholds suitable for operation with a variety of supply voltages are available. The CXDR75123L has an open-drain output stage, while the CXDR75122 have push-pull outputs. The CXDR75123’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The CXDR75122 have an active-low RESET output, while the CXDR75122 has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 0.8V. Low supply current makes the CXDR75122/CXDR75123 ideal for use in portable equipment. The CXDR75122/CXDR75123 are available in 5-pin SOT-23-5 and 6 pin TDFN2X2 packages.

   产品特点 返回TOP99H嘉泰姆

„ Precision Monitoring of +2.5V and +3V Power-Supply Voltages 99H嘉泰姆

„ Fully Specified Over Temperature 99H嘉泰姆

„ Available in Three Output Configurations Push-Pull RESET Output (CXDR75122L) Push-Pull RESET Output (CXDR75122H) Open-Drain RESET Output (CXDR75123L) 99H嘉泰姆

„ Externally Programmable Time Delay Generator 99H嘉泰姆

„ 14μA Supply Current 99H嘉泰姆

„ Guaranteed Reset Valid to VCC = 0.8V 99H嘉泰姆

„ Power Supply Transient Immunity 99H嘉泰姆

„ 5 pin SOT-23-5 and 6 pin TDFN2X2 Packages 99H嘉泰姆

„ 2% Threshold Accuracy99H嘉泰姆

   应用范围 返回TOP99H嘉泰姆

„ Computers 99H嘉泰姆

„ Controllers 99H嘉泰姆

„ Intelligent Instruments 99H嘉泰姆

„ Critical μP and μC Power Monitoring 99H嘉泰姆

„ Portable / Battery-Powered Equipment 99H嘉泰姆

„ Automotive99H嘉泰姆

   技术规格书（产品PDF) 返回TOP 99H嘉泰姆

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