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SN74ALS323 Datasheet(PDF) 1 Page - Texas Instruments |
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SN74ALS323 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 7 page SN54ALS323, SN74ALS323 8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS WITH SYNCHRONOUS CLEAR AND 3-STATE OUTPUTS SDAS267A – DECEMBER 1982 – REVISED DECEMBER 1994 Copyright © 1994, Texas Instruments Incorporated 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • Multiplexed I/O Ports Provide Improved Bit Density • Four Modes of Operation: – Hold (Store) – Shift Right – Shift Left – Load Data • Operate With Outputs Enabled or at High Impedance • 3-State Outputs Drive Bus Lines Directly • Can Be Cascaded for n-Bit Word Lengths • Synchronous Clear • Applications: – Stacked or Push-Down Registers – Buffer Storage – Accumulator Registers • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description These 8-bit universal shift /storage registers feature multiplexed input/output (I/O) ports to achieve full 8-bit data handling in a 20-pin package. Two function-select (S0, S1) inputs and two output-enable (OE1, OE2) inputs can be used to choose the modes of operation listed in the function table. Synchronous parallel loading is accomplished by taking both S0 and S1 high. This places the 3-state outputs in the high-impedance state and permits data applied on the I/O ports to be clocked into the register. Reading out of the register can be accomplished while the outputs are enabled in any mode. Clearing occurs synchronously when the clear (CLR) input is low. Taking either OE1 or OE2 high disables the outputs but has no effect on clearing, shifting, or storing data. The SN54ALS323 is characterized for operation over the full military temperature range of – 55 °C to 125°C. The SN74ALS323 is characterized for operation from 0 °C to 70°C. 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 S0 OE1 OE2 G/QG E/QE C/QC A/QA QA′ CLR GND VCC S1 SL QH′ H/QH F/QF D/QD B/QB CLK SR SN54ALS323 ...J PACKAGE SN74ALS323 . . . DW OR N PACKAGE (TOP VIEW) 3 2120 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 SL QH′ H/QH F/QF D/QD G/QG E/QE C/QC A/QA QA′ SN54ALS323 . . . 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. |
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