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SN74LS90 Datasheet(PDF) 5 Page - ON Semiconductor |
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SN74LS90 Datasheet(HTML) 5 Page - ON Semiconductor |
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5 / 7 page 
SN74LS90 http://onsemi.com 5 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Symbol Parameter Limits Unit Test Conditions Min Typ Max VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 V Guaranteed Input LOW Voltage for All Inputs 74 0.8 VIK Input Clamp Diode Voltage −0.65 −1.5 V VCC = MIN, IIN = −18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table 74 2.7 3.5 V VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table 74 0.35 0.5 V IOL = 8.0 mA IIH Input HIGH Current 20 μA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current MS, MR CP0 CP1 (LS90, LS92) CP1 (LS93) −0.4 −2.4 −3.2 −1.6 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) −20 −100 mA VCC = MAX ICC Power Supply Current 15 mA VCC = MAX Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. |
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