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SN74HC646DW Fiches technique(PDF) 7 Page - Texas Instruments |
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SN74HC646DW Fiches technique(HTML) 7 Page - Texas Instruments |
7 / 10 page SN54HC646, SN74HC646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCLS150B – DECEMBER 1982 – REVISED MAY 1997 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 2) PARAMETER FROM TO VCC TA = 25°C SN54HC646 SN74HC646 UNIT PARAMETER (INPUT) (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 6 11 4.4 5.5 fmax 4.5 V 31 54 22 27 MHz 6 V 36 64 25 31 2 V 65 180 270 225 CLKBA or CLKAB A or B 4.5 V 18 36 54 45 6 V 14 31 46 38 2 V 50 135 205 170 tpd A or B B or A 4.5 V 14 27 41 34 ns 6 V 11 23 35 29 † 2 V 70 190 285 240 SBA or SAB† A or B 4.5 V 20 38 57 48 6 V 16 32 48 41 2 V 85 245 370 305 ten OE A or B 4.5 V 25 49 74 61 ns 6 V 20 42 63 52 2 V 85 245 370 305 tdis OE A or B 4.5 V 25 49 74 61 ns 6 V 20 42 63 52 2 V 80 245 370 305 ten DIR A or B 4.5 V 25 49 74 61 ns 6 V 20 42 63 52 2 V 80 245 370 305 tdis DIR A or B 4.5 V 25 49 74 61 ns 6 V 20 42 63 52 2 V 28 60 90 75 tt Any 4.5 V 8 12 18 15 ns 6 V 6 10 15 13 † These parameters are measured with the internal output state of the storage register opposite that of the bus input. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
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