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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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目录产品概述 返回TOP 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TOP „ Precision Monitoring Voltage of +2.2V and +3.7V „ Fully Specified Over Temperature „ Available in Three Output Configurations Push-Pull RESET Output (CXDR75120L) Push-Pull RESET Output (CXDR75120H) Open-Drain RESET Output (CXDR75121L) „ Reset Deassert Time Smaller than 100μs when VCC Higher than Monitor Voltages (CD Pin Floating) „ Externally Programmable Time Delay Generator „ 27μA Supply Current at VCC=3.3V „ Guaranteed Reset Valid to VCC = 0.8V „ TSOT-23-5 Packages „ 2% Threshold Accuracy 应用范围 返回TOP „ Computers „ Controllers „ Intelligent Instruments „ Critical μP and μC Power Monitoring „ Portable / Battery-Powered Equipment „ Automotive 技术规格书（产品PDF) 返回TOP 需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
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Delay Time Adjustable |
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Part NO. |
VCC(V min. |
VCC(V max. |
Detecting Voltage(V) |
ICD source (μA) |
VTCD (V) |
Vth Accu racy(%) |
Isupply (μA) |
Note |
Package |
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2.2 |
5.5 |
0.8*VCC |
1.1 |
0.833 |
-- |
4 |
Open-Drain RESET Output TMR(ms) =76000×CMR(uF) |
ADFN1.5X 1.5-6 |
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0.8 |
5.5 |
2.2/3.7 |
0.18 |
-- |
2 |
29 |
CXDR75120H/L is a Push-Pull High/Low Reset CXDR75121L is an Open-Drain Low Reset TCD(ms)=5700×CD(uF) |
TSOT25 |
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