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SN74F244DBRE4 Datasheet(PDF) 1 Page - Texas Instruments |
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SN74F244DBRE4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 17 page SN54F244, SN74F244 OCTAL BUFFERS/DRIVERS WITH 3STATE OUTPUTS SDFS063A − D2932, MARCH 1987 − REVISED OCTOBER 1993 Copyright 1993, Texas Instruments Incorporated 2−1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 • 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers • Package Options Include Plastic Small-Outline (SOIC) and Shrink Small-Outline (SSOP) Packages, Ceramic Chip Carriers, and Plastic and Ceramic DIPs description These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. Taken together with the ′F240 and ′F241, these devices provide the choice of selected combinations of inverting and noninverting outputs, symmetrical OE (active-low output-enable) inputs, and complementary OE and OE inputs. The ′F244 is organized as two 4-bit buffers/line drivers with separate output enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. The SN74F244 is available in TI’s shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area. The SN54F244 is characterized for operation over the full military temperature range of − 55 °C to 125 °C. The SN74F244 is characterized for operation from 0 °C to 70°C. FUNCTION TABLE (each buffer) INPUTS OUTPUT OE A OUTPUT Y L H H L LL H X Z 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 SN54F244 ...J PACKAGE SN74F244 . . . DB, DW, OR N PACKAGE (TOP VIEW) 3 2 1 20 19 9 10 11 12 13 4 5 6 7 8 18 17 16 15 14 1Y1 2A4 1Y2 2A3 1Y3 1A2 2Y3 1A3 2Y2 1A4 SN54F244 . . . 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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