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74LV540A Arkusz danych(PDF) 2 Page - Texas Instruments |
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74LV540A Arkusz danych(HTML) 2 Page - Texas Instruments |
2 / 19 page SN54LV540A, SN74LV540A OCTAL BUFFERS/DRIVERS WITH 3STATE OUTPUTS SCLS409H − APRIL 1998 − REVISED APRIL 2005 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description/ordering information (continued) These devices are ideal for driving bus lines or buffer memory address registers. They feature inputs and outputs on opposite sides of the package to facilitate printed circuit board layout. The 3-state control gate is a two-input AND gate with active-low inputs so that, if either output enable (OE1 or OE2) input is high, all corresponding outputs are in the high-impedance state. The outputs provide inverted data when they are not 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. FUNCTION TABLE (each buffer/driver) INPUTS OUTPUT OE1 OE2 A OUTPUT Y L L L H L LH L H XX Z X H X Z logic diagram (positive logic) OE1 OE2 To Seven Other Channels A1 Y1 1 19 2 18 |
Podobny numer części - 74LV540A |
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Podobny opis - 74LV540A |
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