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74AC11244DB Scheda tecnica(PDF) 1 Page - Texas Instruments |
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74AC11244DB Scheda tecnica(HTML) 1 Page - Texas Instruments |
1 / 14 page 74AC11244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS SCAS171B – MARCH 1987 – REVISED SEPTEMBER 1998 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D EPIC™ (Enhanced-Performance Implanted CMOS ) 1- µm Process D 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers D Flow-Through Architecture Optimizes PCB Layout D Center-Pin VCC and GND Pin Configurations Minimize High-Speed Switching Noise D 500-mA Typical Latch-Up Immunity at 125 °C D Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, and Standard Plastic DIPs (NT) description The 74AC11244 is an octal buffer or line driver designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device can be used as two 4-bit buffers or one 8-bit buffer, with active-low output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The 74AC11244 is characterized for operation from –40 °C to 85°C. FUNCTION TABLE (each driver) INPUTS OUTPUT OE A Y L H H L LL H X Z Copyright © 1998, 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. 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. EPIC is a trademark of Texas Instruments Incorporated. 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 1Y1 1Y2 1Y3 1Y4 GND GND GND GND 2Y1 2Y2 2Y3 2Y4 1OE 1A1 1A2 1A3 1A4 VCC VCC 2A1 2A2 2A3 2A4 2OE DB, DW, NT, OR PW PACKAGE (TOP VIEW) |
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