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SN74AHC244QDWRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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SN74AHC244QDWRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 13 page SN74AHC244Q OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS SGDS017 – FEBRUARY 2002 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Q Devices Meet Automotive Performance Requirements D Customer-Specific Configuration Control Can Be Supported Along With Major-Change Approval D EPIC (Enhanced-Performance Implanted CMOS) Process D Operating Range 2-V to 5.5-V VCC D Latch-Up Performance Exceeds 250 mA Per JESD 17 description This octal buffer/driver is designed specifically to improve the performance and density of 3-state memory-address drivers, clock drivers, and bus-oriented receivers and transmitters. The SN74AHC244Q 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. 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. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING 40 °Cto125°C SOIC – D Tape and reel SN74AHC244QDWR AHC244Q –40 °C to 125°C TSSOP – PW Tape and reel SN74AHC244QPWR HA244Q † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each 4-bit buffer/driver) INPUTS OUTPUT OE A Y L H H L LL H X Z Copyright 2002, 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. 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 DW OR PW PACKAGE (TOP VIEW) |
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