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LS245 数据表(PDF) 2 Page - Texas Instruments |
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LS245 数据表(HTML) 2 Page - Texas Instruments |
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2 / 18 page ![]() SN54LS245, SN74LS245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDLS146A – OCTOBER 1976 – REVISED FEBRUARY 2002 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 FUNCTION TABLE INPUTS OPERATION OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation schematics of inputs and outputs EQUIVALENT OF EACH INPUT VCC Input 9 k Ω NOM TYPICAL OF ALL OUTPUTS Output VCC 50 Ω NOM logic diagram (positive logic) DIR OE A1 B1 1 2 18 19 To Seven Other Channels |
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