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SN74ALS857NT Datasheet(PDF) 1 Page - Texas Instruments |
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SN74ALS857NT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 13 page SN54ALS857 . . . JT PACKAGE SN74ALS857 . . . DW OR NT PACKAGE (TOP VIEW) SN54ALS857 . . . FK PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 S0 1A 1B 1Y 2A 2B 2Y 3A 3B 3Y OPER = 0 GND VCC S1 6A 6B 6Y 5A 5B 5Y 4A 4B 4Y COMP NC – No internal connection 32 1 28 27 12 13 5 6 7 8 9 10 11 25 24 23 22 21 20 19 6B 6Y 5A NC 5B 5Y 4A 1Y 2A 2B NC 2Y 3A 3B 426 14 15 16 17 18 SN54ALS857, SN74ALS857 HEX 2-TO-1 UNIVERSAL MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS170A – DECEMBER 1982 – REVISED JANUARY 1995 Copyright © 1995, Texas Instruments Incorporated 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • Select True or Complementary Data • Perform AND/NAND (Masking) of A or B Operand • Cascadable to Expand Number of Operands • Detect Zeros on A or B Operands • 3-State Outputs Interface Directly With System Bus • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs description The ′ALS857 are hextuple 2-line to 1-line multiplexers with 3-state outputs. The devices can provide either true (COMP low) or inverted (COMP high) data at the Y outputs. In addition, the ′ALS857 perform the logical AND function (A • B) and the clear function as well. The four modes of operation are: • Select A-data inputs • Select B-data inputs • AND A inputs with B inputs • Clear In either of the first two modes, OPER = 0 is high if all the selected A or B inputs are low. The six Y outputs and the OPER = 0 output are all 3-state and rated at 12-mA and 24-mA IOL for the SN54ALS857 and SN74ALS857, respectively. All outputs can be placed in the high-impedance state by applying a high level to the COMP, S0, and S1 inputs simultaneously. The SN54ALS857 is characterized for operation over the full military temperature range of – 55 °C to 125°C. The SN74ALS857 is characterized for operation from 0 °C to 70°C. 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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