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SN74LS640 Datasheet(PDF) 2 Page - Motorola, Inc |
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SN74LS640 Datasheet(HTML) 2 Page - Motorola, Inc |
2 / 3 page 5-2 FAST AND LS TTL DATA SN54/74LS640 • SN54/74LS645 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 IOH Output Current — High 54, 74 – 3.0 mA OH pg 54 74 –12 –15 mA 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 Guaranteed Input LOW Voltage for All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VOH Output HIGH Voltage 54, 74 2.4 3.4 V VCC = MIN, IOH = 3.0 mA VOH Output HIGH Voltage 54, 74 2.0 V VCC = MIN, IOH = 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 IOZH Output Off Current HIGH 20 µA VCC = MAX, VOUT = 2.7 V IOZL Output Off Current LOW – 400 µA VCC = MAX, VOUT = 0.4 V I I HIGH C A or B, DIR or G 20 µA VCC = MAX, VIN = 2.7 V IIH Input HIGH Current DIR or G 0.1 mA VCC = MAX, VIN = 7.0 V IH p A or B 0.1 mA VCC = MAX, VIN = 5.5 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Output Short Circuit Current (Note 1) –40 – 225 mA VCC = MAX I Power Supply Current Total Output HIGH 70 mA V MAX ICC Total, Output LOW 90 mA VCC = MAX Total at HIGH Z 95 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Sb l P Limits Ui T C di i Sb l P LS640 LS645 Ui T C di i Symbol Parameter Min Typ Max Min Typ Max Unit Test Conditions tPLH tPHL Propagation Delay A to B 6.0 8.0 10 15 8.0 11 15 15 ns C45 F tPLH tPHL Propagation Delay B to A 6.0 8.0 10 15 8.0 11 15 15 ns CL = 45 pF, tPZL tPZH Output Enable Time G, DIR to A 31 23 40 40 31 26 40 40 ns CL 45 pF, RL = 667 Ω tPZL tPZH Output Enable Time G, DIR to B 31 23 40 40 31 26 40 40 ns tPLZ tPHZ Output Disable Time G, DIR to A 15 15 25 25 15 15 25 25 ns CL =5 0pF tPLZ tPHZ Output Disable Time G, DIR to B 15 15 25 25 15 15 25 25 ns CL = 5.0 pF |
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