SN74LS21

The guaranteed operating ranges of the SN74LS21 can be summarized as:(1):the symbol is Vcc,the parameter is supply voltage,the Min is 4.75,the Typ is 5.0,the Max is 5.25,the unit is V;(2):the symbol is TA,the parameter is operating ambient temperature range,the Min is 0,the Typ is 25,the Max is 70,the unit is ;(3):the symbol is IOH,the parameter is output current - high,the Max is -0.4,the unit is mA;(4):the symbol is IOL,the parameter is output current - low,the Max is 8.0,the unit is mA. 

The DC characteristics over operating temperature range of the SN74LS21 can be summarized as:(1):the symbol is VIH,the parameter is input high voltage,the Min is 2.0,the unit is V;(2):the symbol is VIL,the parameter is input low voltage,the Max is 0.8,the unit is V;(3):the symbol is VIK,the parameter is input clamp diode voltage,the Typ is -0.65,the Max is -1.5,the unit is V;(4):the symbol is VOH,the parameter is output high voltage,the Min is 2.7,the Typ is 3.5,the unit is V;(5):the symbol is VOL,the parameter is outputput low voltage,the Typ is 0.35,the Max is 0.5,the unit is V;(6):the symbol is IIH,the parameter is input high current,the Max is 20,0.1,the unit is A,mA;(7):the symbol is IIL,the parameter is input low current,the Max is -0.4,the unit is mA;(8):the symbol is IOS,the parameter is short circuit current,the Min is -20,the Max is -100,the unit is mA;(9):the symbol is ICC,the parameter is power supply current total, output high,the Max is 2.4,the unit is mA;(10):the symbol is ICC,the parameter is power supply current total, output low,the Max is 4.4,the unit is mA.