The SL4001B NOR gates provide the system designer with direct emplementation of the NOR function.
   
• Operating Voltage Range: 3.0 to 18 V
• Maximum input current of 1 mA at 18 V over full package temperature range; 100 nA at 18 V and 25°C
• Noise margin (over full package temperature range):
    1.0 V min @ 5.0 V supply
    2.0 V min @ 10.0 V supply
    2.5 V min @ 15.0 V supply