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SN54F27FK Datasheet(PDF) 1 Page - Texas Instruments |
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SN54F27FK Datasheet(HTML) 1 Page - Texas Instruments |
1 / 5 page SN54F27, SN74F27 TRIPLE 3-INPUT POSITIVE-NOR GATES SDFS042A – MARCH 1987 – REVISED OCTOBER 1993 Copyright © 1993, Texas Instruments Incorporated 2–1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • 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 OUTPUT A B C Y H X X L X HX L X XH L L L L H logic symbol† Y 1 1A 2 1B 13 1C 1Y 12 3 2A 4 2B 5 2C 2Y 6 9 3A 10 3B 11 3C 3Y 8 A B C logic diagram, each gate (positive logic) ≥1 † 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. SN54F27 ...J PACKAGE SN74F27 ...D OR N PACKAGE (TOP VIEW) SN54F27 . . . FK PACKAGE (TOP VIEW) 32 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 1Y NC 3C NC 3B 2A NC 2B NC 2C NC – No internal connection 1 2 3 4 5 6 7 14 13 12 11 10 9 8 1A 1B 2A 2B 2C 2Y GND VCC 1C 1Y 3C 3B 3A 3Y PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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