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MB3771 Datasheet: Bipolar Power Supply Monitor - Fujitsu

MB3771 Datasheet: Bipolar Power Supply Monitor - Fujitsu

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<strong>MB3771</strong>6. 5 V <strong>Power</strong> <strong>Supply</strong> <strong>Monitor</strong> with forced RESET input (VCC = 5 V)RESIN is an TTL compatible input.RESINVCC<strong>MB3771</strong>1287RESETCT3465Logic Circuit7. 5 V <strong>Power</strong> <strong>Supply</strong> <strong>Monitor</strong> with Non-inverted RESETIn this case, Comparator C is used to invert RESET signal. OUTC is an open-collector output.RL is used an a pull-up resistor.VCCRESETRL: 10 kΩCT1234<strong>MB3771</strong>87658. <strong>Supply</strong> Voltage <strong>Monitor</strong>ing with Delayed TriggerWhen the voltage shown in the diagram below is applied at VCC, the minimum value of the input pulse width isincreased to 40 µs (when C1 = 1000 pF).The formula for calculating the minimum value of the input pulse width [TPI] is:TPI [µs] := 4 × 10 -2 × C1 [pF]TPVCC5 V4 V<strong>MB3771</strong>CT12348765C1RESET10

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