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SN74LS645 Fiches technique(PDF) 3 Page - Motorola, Inc |
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SN74LS645 Fiches technique(HTML) 3 Page - Motorola, Inc |
3 / 3 page 5-3 FAST AND LS TTL DATA SN54/74LS641 • SN54/74LS642 GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 –55 0 25 25 125 70 °C VOH Output Current — High 54, 74 5.5 V IOL Output Current — Low 54 74 12 24 mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Sb l P Limits Ui T C di i Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.5 V Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.6 V pg All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA IOH Output HIGH Current 54, 74 100 µA VCC = MIN, VOH = MAX VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 12 mA VCC = VCC MIN, VIN =VIL or VIH VOL Output LOW Voltage 74 0.35 0.5 V IOL = 24 mA VIN = VIL or VIH per Truth Table IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V IIH Input HIGH Current –0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V I Power Supply Current Total, Output HIGH 70 mA V MAX ICC Total, Output LOW 90 mA VCC = MAX Total at HIGH Z 95 AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Sb l P Limits Ui T C di i Sb l P LS641 LS642 Ui T C di i Symbol Parameter Min Typ Max Min Typ Max Unit Test Conditions tPLH tPHL Propagation Delay, A to B 17 16 25 25 19 14 25 25 ns C45 F tPLH tPHL Propagation Delay, B to A 17 16 25 25 19 14 25 25 ns CL = 45 pF, tPLH tPHL Propagation Delay, G, DIR to A 23 34 40 50 26 43 40 60 ns L p, RL = 667 Ω tPLH tPHL Propagation Delay, G, DIR to B 25 37 40 50 28 39 40 60 ns |
Numéro de pièce similaire - SN74LS645 |
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Description similaire - SN74LS645 |
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