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74123 Scheda tecnica(PDF) 3 Page - Fairchild Semiconductor |
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74123 Scheda tecnica(HTML) 3 Page - Fairchild Semiconductor |
3 / 5 page 3 www.fairchildsemi.com Absolute Maximum Ratings(Note 1) Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Recommended Operating Conditions Note 2: TA = 25°C and VCC = 5V. Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Note 3: All typicals are at VCC = 5V, TA = 25°C. Note 4: Not more than one output should be shorted at a time. Note 5: Quiescent ICC is measured (after clearing) with 2.4V applied to all clear and A inputs, B inputs grounded, all outputs OPEN, CEXT = 0.02 µF, and REXT = 25 KΩ. Note 6: ICC is measured in the triggered state with 2.4V applied to all clear and B inputs, A inputs grounded, all outputs OPEN, CEXT = 0.02 µF, and REXT = 25 kΩ. Supply Voltage 7V Input Voltage 5.5V Operating Free Air Temperature Range 0 °C to +70°C Storage Temperature −65°C to +150°C Symbol Parameter Min Nom Max Units VCC Supply Voltage 4.75 5 5.25 V VIH HIGH Level Input Voltage 2 V VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current −0.8 mA IOL LOW Level Output Current 16 mA tW Pulse Width A or B HIGH 40 (Note 2) A or B LOW 40 ns Clear LOW 40 TWQ Minimum Width of A or B 65 ns (Min) Pulse at Q (Note 2) REXT External Timing Resistor 5 50 k Ω CEXT External Timing Capacitance No Restriction µF CWIRE Wiring Capacitance 50 pF at REXT/CEXT Terminal (Note 2) TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 3) VI Input Clamp Voltage VCC = Min, II = −12 mA −1.5 V VOH HIGH Level VCC = Min, IOH = Max 2.5 3.4 V Output Voltage VIL = Max, VIH = Min VOL LOW Level VCC = Min, IOL = Max 0.2 0.4 V Output Voltage VIH = Min, VIL = Max II Input Current @ Max Input Voltage VCC = Max, VI = 5.5V 1 mA IIH HIGH Level VCC = Max Data 40 µA Input Current VI = 2.4V Clear 80 IIL Low Level VCC = Max, VI = 0.4V Clear −3.2 mA Input Current Data −1.6 IOS Short Circuit Output Current VCC = Max (Note 4) −10 −40 mA ICC Supply Current VCC = Max (Note 5)(Note 6) 46 66 mA |
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