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CY74FCT543CTQCTE4 Datasheet(PDF) 2 Page - Texas Instruments |
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CY74FCT543CTQCTE4 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 12 page CY54FCT543T, CY74FCT543T 8-BIT LATCHED REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS030A – MAY 1994 – REVISED OCTOBER 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 CY74FCT543CTQCT FCT543C SOIC SO Tube 5.3 CY74FCT543CTSOC FCT543C SOIC – SO Tape and reel 5.3 CY74FCT543CTSOCT FCT543C QSOP – Q Tape and reel 6.5 CY74FCT543ATQCT FCT543A –40 °C to 85°C SOIC SO Tube 6.5 CY74FCT543ATSOC FCT543A SOIC – SO Tape and reel 6.5 CY74FCT543ATSOCT FCT543A QSOP – Q Tape and reel 8.5 CY74FCT543TQCT FCT543 SOIC SO Tube 8.5 CY74FCT543TSOC FCT543 SOIC – SO Tape and reel 8.5 CY74FCT543TSOCT FCT543 55 °Cto125°C CDIP D Tube 10 CY54FCT543TDMB –55 °C to 125°C CDIP – D Tube 10 CY54FCT543TLMB † 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 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 flow control is the same, except uses CEBA, LEBA, and OEBA. § Before LEAB low-to-high transition |
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