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SN74F258 Scheda tecnica(PDF) 1 Page - Texas Instruments |
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SN74F258 Scheda tecnica(HTML) 1 Page - Texas Instruments |
1 / 5 page SN54F258, SN74F258 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDFS067A − D2932, MARCH 1987 − REVISED OCTOBER 1993 Copyright © 1993, Texas Instruments Incorporated 2−1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • 3-State Outputs Interface Directly With System Bus • Provides Bus Interface From Multiple Sources in High-Performance Systems • Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs description The ′F258 is designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output-enable (OE) input is at a high logic level. The SN54F258 is characterized for operation over the full military temperature range of − 55 °C to 125 °C. The SN74F258 is characterized for operation from 0 °C to 70°C. FUNCTION TABLE INPUTS OUTPUT OE A /B A B OUTPUT Y H X X X Z L LL X H L LH X L L HX L H L H X H L logic symbol† OE MUX 2 1A 1 3 1B EN 15 G1 1 1Y 4 5 2A 6 2B 2Y 7 11 3A 10 3B 3Y 9 14 4A 13 4B 4Y 12 A /B 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. SN54F258 ...J PACKAGE SN74F258 ...D OR N PACKAGE (TOP VIEW) 32 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 4A 4B NC 4Y 3A 1B 1Y NC 2A 2B SN54F258 . . . FK PACKAGE (TOP VIEW) NC − No internal connection 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 A /B 1A 1B 1Y 2A 2B 2Y GND VCC OE 4A 4B 4Y 3A 3B 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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