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SN74ALS563 датащи(PDF) 1 Page - Texas Instruments |
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SN74ALS563 датащи(HTML) 1 Page - Texas Instruments |
1 / 5 page SN54ALS563B, SN74ALS563B OCTAL D-TYPE TRANSPARENT LATCHES WITH 3-STATE OUTPUTS SDAS163A – DECEMBER 1982 – REVISED JANUARY 1995 Copyright © 1995, Texas Instruments Incorporated 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • 3-State Buffer-Type Outputs Drive Bus Lines Directly • Bus-Structured Pinout • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), Standard Plastic (N) and Ceramic (J) 300-mil DIPs, and Ceramic Flat (W) Packages description These 8-bit D-type transparent latches feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. While the latch-enable (LE) input is high, the Q outputs follow the complements of data (D) inputs. When LE is taken low, the outputs are latched at the inverses of the levels set up at the D inputs. A buffered output-enable (OE) input places the eight outputs in either a normal logic state (high or low logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased high logic level provide the capability to drive bus lines without interface or pullup components. OE does not affect internal operations of the latches. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. The SN54ALS563B is characterized for operation over the full military temperature range of – 55 °C to 125°C. The SN74ALS563B is characterized for operation from 0 °C to 70°C. FUNCTION TABLE (each latch) INPUTS OUTPUT OE LE D Q L H H L L HH H L LX Q0 H X X Z 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 OE 1D 2D 3D 4D 5D 6D 7D 8D GND VCC 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q LE SN54ALS563B ...J OR W PACKAGE SN74ALS563B . . . DW OR N PACKAGE (TOP VIEW) 32 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 2Q 3Q 4Q 5Q 6Q 3D 4D 5D 6D 7D SN54ALS563B . . . FK PACKAGE (TOP VIEW) 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 - SN74ALS563 |
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Аналогичное описание - SN74ALS563 |
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