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LM339 bảng dữ liệu(PDF) 4 Page - First Components International |
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LM339 bảng dữ liệu(HTML) 4 Page - First Components International |
4 / 4 page LM339 Quad Voltage Comparator These dual comparators feature high gain, wide bandwidth characteristics. This gives the device oscillation tendencies if the outputs are capacitively coupled to the inputs via stray capacitance. This oscillation manifests itself during output transitions (V OL to VOH ). To alleviate this situation, input resistors <10 kΩ should be used. The addition of positive feedback (< 10 mV) is also recommended. It is good design practice to ground all unused pins. Differential input voltages may be larger than supply voltage without damaging the comparator’s inputs. Voltages more negative than –0.3 V should not be used. APPLICATIONS INFORMATION Zero Crossing Detector (Single Supply) Zero Crossing Detector (Split Supply) Square Wave Oscillator Driving Logic Inverting Comparator With Hysteresis Non-Inverting Comparator With Hysteresis |
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