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74F27 - TRIPLE 3-INPUT POSITIVE-NOR GATES

General Description

These devices contain three independent 3-input NOR gates.

B

C or Y = A + B + C in positive logic.

55°C to 125°C.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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• 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 and IEC Publication 617-12. Pin numbers shown are for the D, J, and N packages.