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74FCT2543ATSOCTE4 bảng dữ liệu(PDF) 2 Page - Texas Instruments |
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74FCT2543ATSOCTE4 bảng dữ liệu(HTML) 2 Page - Texas Instruments |
2 / 14 page CY74FCT2543T 8-BIT LATCHED TRANSCEIVER WITH 3-STATE OUTPUTS SCCS042C – SEPTEMBER 1994 – REVISED NOVEMBER 2001 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PIN DESCRIPTION NAME DESCRIPTION OEAB A-to-B output-enable input (active low) OEBA B-to-A output-enable input (active low) CEAB A-to-B enable input (active low) CEBA B-to-A enable input (active low) LEAB A-to-B latch-enable input (active low) LEBA B-to-A latch-enable input (active low) A A-to-B data inputs or B-to-A 3-state outputs B B-to-A data inputs or A-to-B 3-state outputs ORDERING INFORMATION TA PACKAGE† SPEED (ns) ORDERABLE PART NUMBER TOP-SIDE MARKING QSOP – Q Tape and reel 5.3 CY74FCT2543CTQCT FCT2543C SOIC SO Tube 5.3 CY74FCT2543CTSOC FCT2543C SOIC – SO Tape and reel 5.3 CY74FCT2543CTSOCT FCT2543C –40 °C to 85°C QSOP – Q Tape and reel 6.5 CY74FCT2543ATQCT FCT2543A SOIC SO Tube 6.5 CY74FCT2543ATSOC FCT2543A SOIC – SO Tape and reel 6.5 CY74FCT2543ATSOCT FCT2543A QSOP – Q Tape and reel 8.5 CY74FCT2543TQCT FCT2543 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE INPUTS LATCH OUTPUT CEAB LEAB OEAB A-TO-B‡ B H X X Storing Z X H X Storing X X XH X Z L L L Transparent Current A inputs L H L Storing Previous A inputs ‡ Before LEAB low-to-high transition H = High logic level, L = Low logic level, X = Don’t care, Z = High-impedance state A-to-B data flow shown; B-to-A is the same, except using CEBA, LEBA, and OEBA. |
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