CXDR75128/CXDR75129They 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

   产品概述 返回TOPyU2嘉泰姆

The CXDR75129L has an open-drain output stage, while the CXDR75128 have push-pull outputs. The CXDR75129’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The CXDR75128 have an active-low RESET output, while the CXDR75128 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 CXDR75128/CXDR75129 ideal for use in portable equipment. The CXDR75128/CXDR75129 are available in 5-pin SOT23-5 or TSOT-23-5 packages.The CXDR75128/CXDR75129 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 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.

   产品特点 返回TOPyU2嘉泰姆

„ Precision Monitoring of +3V, +3.3V, and +5V Power-Supply Voltages yU2嘉泰姆

„ Fully Specified Over Temperature yU2嘉泰姆

„ Available in Three Output Configurations Push-Pull RESET Output (CXDR75128L) Push-Pull RESET Output (CXDR75128H) Open-Drain RESET Output (CXDR75129L) yU2嘉泰姆

„ Externally Programmable Time Delay Generator yU2嘉泰姆

„ 14μA Supply Current yU2嘉泰姆

„ Guaranteed Reset Valid to VCC = 0.8V yU2嘉泰姆

„ Power Supply Transient Immunity yU2嘉泰姆

„ 5 pin SOT-23-5 or TSOT-23-5 Packages yU2嘉泰姆

„ 2% Threshold AccuracyyU2嘉泰姆

   应用范围 返回TOPyU2嘉泰姆

„ Computers yU2嘉泰姆

„ Controllers yU2嘉泰姆

„ Intelligent Instruments yU2嘉泰姆

„ Critical μP and μC Power Monitoring yU2嘉泰姆

„ Portable / Battery-Powered Equipment yU2嘉泰姆

„ AutomotiveyU2嘉泰姆

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