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SN74ALS258AN Datasheet(PDF) 1 Page - Texas Instruments |
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SN74ALS258AN Datasheet(HTML) 1 Page - Texas Instruments |
1 / 9 page SN54ALS257A, SN54ALS258A, SN74ALS257A, SN74ALS258A, SN74AS257, SN74AS258 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS124C – APRIL 1982 – REVISED AUGUST 1996 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 3-State Outputs Interface Directly With System Bus D Provide Bus Interface From Multiple Sources in High-Performance Systems D Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description These data selectors/multiplexers are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE) input is at a high logic level. The SN54ALS257A and SN54ALS258A are characterized for operation over the full military temperature range of –55 °C to 125°C. The SN74ALS257A, SN74ALS258A, SN74AS257, and SN74AS258 are characterized for operation from 0 °C to 70°C. FUNCTION TABLE INPUTS OUTPUT Y OE A /B DATA SN54ALS257A SN74ALS257A SN54ALS258A SN74ALS258A OE A/B A B SN74ALS257A SN74AS257 SN74ALS258A SN74AS258 H X X X Z Z L LL XL H L LH XH L L HX LL H L H X H H L Copyright © 1996, 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. 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 SN54ALS257A, SN54ALS258A ...J PACKAGE SN74ALS257A, SN74ALS258A, SN74AS257, SN74AS258 ...D OR N PACKAGE (TOP VIEW) SN54ALS257A, SN54ALS258A . . . FK PACKAGE (TOP VIEW) NC – No internal connection 32 1 20 19 9 1011 1213 4 5 6 7 8 18 17 16 15 14 4A 4B NC 4Y 3A 1B 1Y NC 2A 2B 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. |
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