ParameterComparisonValue Vcc range (V) equals not equal All 2.0 to 6.0 4.75 to 5.25 Input Level equals not equal All TTL CMOS Output Level equals not equal All TTL CMOS Output Drive (mA) = < != >= > <= All -4/4 -0.8/16 -0.4/8 Output equals not equal All 2S 3S