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SN74HC21 датащи(PDF) 1 Page - Texas Instruments |
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SN74HC21 датащи(HTML) 1 Page - Texas Instruments |
1 / 5 page SN54HC21, SN74HC21 DUAL 4-INPUT POSITIVE-AND GATES SCLS087C – DECEMBER 1982 – REVISED MAY 1997 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Package Options Include Plastic Small-Outline (D) and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description These devices contain two independent 4-input AND gates. They perform the Boolean function Y + A • B • C • Dor Y + A ) B ) C ) D in positive logic. The SN54HC21 is characterized for operation over the full military temperature range of –55 °C to 125 °C. The SN74HC21 is characterized for operation from –40 °C to 85°C. FUNCTION TABLE (each gate) INPUTS OUTPUT A B C D Y H H H H H L XX X L X LX X L X XL X L X X X L L logic symbol† 1 1A 2 1B 1Y 6 4 1C 5 1D 2Y 8 9 2A 10 2B & 12 2C 13 2D † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, J, N, and W packages. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 1 2 3 4 5 6 7 14 13 12 11 10 9 8 1A 1B NC 1C 1D 1Y GND VCC 2D 2C NC 2B 2A 2Y SN54HC21 . . . J OR W PACKAGE SN74HC21 ...D OR N PACKAGE (TOP VIEW) 32 1 20 19 910 11 1213 4 5 6 7 8 18 17 16 15 14 2C NC NC NC 2B NC NC 1C NC 1D SN54HC21 . . . FK PACKAGE (TOP VIEW) NC – No internal connection Copyright © 1997, Texas Instruments Incorporated 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. |
Аналогичный номер детали - SN74HC21 |
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Аналогичное описание - SN74HC21 |
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