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SN74AHC245QDWRG4Q1 데이터시트(PDF) 1 Page - Texas Instruments |
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SN74AHC245QDWRG4Q1 데이터시트(HTML) 1 Page - Texas Instruments |
1 / 14 page SN74AHC245Q OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS SGDS018 – 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 Operating Range 2-V to 5.5-V VCC D Latch-Up Performance Exceeds 250 mA Per JESD 17 description The SN74AHC245Q octal bus transceiver is designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. This device allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated. 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 – DW Tape and reel SN74AHC245QDWR AHC245Q –40 °C to 125°C TSSOP – PW Tape and reel SN74AHC245QPWR HA245Q † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each transceiver) INPUTS OPERATION OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation 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. DW OR PW PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 DIR A1 A2 A3 A4 A5 A6 A7 A8 GND VCC OE B1 B2 B3 B4 B5 B6 B7 B8 |
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