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SN74LS245 데이터시트(PDF) 2 Page - ON Semiconductor |
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SN74LS245 데이터시트(HTML) 2 Page - ON Semiconductor |
2 / 4 page SN74LS245 http://onsemi.com 2 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits 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 0.8 V Guaranteed Input LOW Voltage for All Inputs VT+–VT– Hysteresis 0.2 0.4 V VCC = MIN VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA VO Output HIGH Voltage 2.4 3.4 V VCC = MIN, IOH = – 3.0 mA VOH Output HIGH Voltage 2.0 V VCC = MIN, IOH = MAX VO Output LOW Voltage 0.25 0.4 V IOL = 12 mA VCC = VCC MIN, VIN =VIL or VIH VOL Output LOW Voltage 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 – 200 µA VCC = MAX, VOUT = 0.4 V I I t HIGH C t A or B, DR or E 20 µA VCC = MAX, VIN = 2.7 V IIH Input HIGH Current DR or E 0.1 mA VCC = MAX, VIN = 7.0 V A or B 0.1 mA VCC = MAX, VIN = 5.5 V IIL Input LOW Current – 0.2 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 A 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, TRISE /TFALL ≤ 6.0 ns) Limits Symbol Parameter Min Typ Max Unit Test Conditions tPLH tPHL Propagation Delay, Data to Output 8.0 8.0 12 12 ns CL = 45 pF, tPZH Output Enable Time to HIGH Level 25 40 ns CL = 45 F, RL = 667 Ω tPZL Output Enable Time to LOW Level 27 40 ns tPLZ Output Disable Time from LOW Level 15 25 ns CL = 5.0 pF, tPHZ Output Disable Time from HIGH Level 15 25 ns L RL = 667 Ω |
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