Series 74LS Logic Type NOR Gate Circuits: 4 Inputs 2 Features: -Voltage - Supply 4.75 V to 5.25 V Current - Output High, Low 400 μA, 8 mA Logical Level - Low 0.8 V Logic Level - High 2V V Marking, Maximum Transfer Delay 15ns per CL @ 5V, 15 pF Operating Temp. 70°C Installation Type Through Hole Supply Device Package 14-PDIP Package/Case 14-DIP (0.300 inch, 7.62 mm)