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MC14568 Scheda tecnica(PDF) 3 Page - Freescale Semiconductor, Inc |
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MC14568 Scheda tecnica(HTML) 3 Page - Freescale Semiconductor, Inc |
3 / 11 page Sensors Freescale Semiconductor 3 MC14568 Table 2. Electrical Characteristics Characteristics noted under conditions TA = +25°C, VDD = 9.0 V, VSS = 0 V, C12 = 0.1 µF (Oscillator Pin) R7 = 8.2 mΩf/fn (timing resistor pin) unless otherwise noted. Symbol Characteristic Test Condition Test Pin Min Typ Max Unit VDD Supply Voltage Range Operating 6 6.0 9.0 12 V IIN Detector Input Current 0 to 40% RH, VIN = 0 to 9.0 V 15 — — 1.0 pA VOS Input Offset Voltage Active Guard Active Guard Detect Comparator 14 – 15 16 – 15 15 – 13 — — — — — — 100 100 50 mV VHYS Hysteresis No Alarm to Alarm 13 80 130 160 mV VCM Common Mode Range Guard Amplifier Smoke Comparator 14 – 15 13 – 15 0.5 0.5 — — VDD – 2.0 VDD – 2.0 V LO-Z HI-Z Active Guard Impedance To VCC To VCC 14 16 — — 10 500 — — k Ω tCL Oscillator Period No Alarm Alarm 12 1.34 32 1.67 40 2.0 48 s ms Timer Out Pulse Width 4 8.0 10 12 ms Timer Period After Pin 1 High to Low, No Smoke 4 — 6.43 10 min VTH Low Voltage Threshold TA = 0 to 50°C 6 7.2 — 7.8 V Sensitivity Adj. Voltage V13/VDD, Pin 3 Open Circuit 13 48.5 50 51.5 % Low Battery Threshold Pin 3 Open Circuit 3 60.6 63 65.6 % Horn Output Voltage IOUT = 16 mA, VDD = 9.0 V IOUT = 16 mA, VDD = 7.2 V IOUT = -16 mA, VDD = 9.0 V IOUT = -16 mA, VDD = 7.2 V 10 – 11 — — 8.5 6.3 0.1 — 8.8 — 0.5 0.9 — — V PWON Horn Output ON Time Alarm Low Battery 10 – 11 450 8.0 500 10 550 12 ms PWOFF Horn Output OFF Time Alarm Alarm Low Battery 10 – 11 450 1350 32 500 1500 40 550 1650 48 ms Feedback VIH VIL 86.3 — — — — 2.7 V Timer Start Logic Levels VIH VIL 14.5 — — — — 2.5 V Timer Start Input Current VIN = 9.0 V 1 20 — 80 µA Timer Out Output Current VOUT = 0.5 V 4 500 — — µA ILON LED Output ON Current VDD = 7.2 V, VOUT = 1.0 V 5 10 — — mA tLON LED Output ON Time No Local Alarm, Not Latched 5 8.0 10 12 ms tLOFF LED Output OFF Time No Alarm, Standby No Alarm, Timer Mode 532 8.0 40 10 48 12 s |
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