• Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs description These devices contain three independent 3-input NOR gates.
They perform the Boolean functions Y = A • B • C or Y = A + B + C in positive logic.
The SN54F27 is characterized for operation over the full military temperature range of – 55°C to 125°C.
The SN74F27 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE (each gate) INPUTS A B C H X X X H X X X H L L L OUTPUT Y L L L H logic symbol† 1 1A ≥1 2 1B 13 12 1Y 1C 3 2A 4 2B 5 2C 6 2Y 9 3A 10 3B 11 8 3Y 3C † This symbol is in accordance with ANSI/IEEE Std 91-1984...

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