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SN74ABT646DGVRE4 Scheda tecnica(PDF) 7 Page - Texas Instruments |
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SN74ABT646DGVRE4 Scheda tecnica(HTML) 7 Page - Texas Instruments |
7 / 16 page SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 2–7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 2) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 5 V, TA = 25°C SN54ABT646 SN74ABT646 UNIT (INPUT) (OUTPUT) MIN TYP MAX MIN MAX MIN MAX fmax 125 125 MHz tPLH CLKBA or CLKAB AorB 2.2 4 6.8 2.2 7.8 ns tPHL CLKBA or CLKAB A or B 1.7 4 7.4 1.7 8.4 ns tPLH AorB BorA 1.5 3 5.9 1.5 6.9 ns tPHL A or B B or A 1.5 3.3 5.9 1.5 6.9 ns tPLH SAB or SBA† BorA 1.5 4 6.1 1.5 7.1 ns tPHL SAB or SBA† B or A 1.5 3.6 6.9 1.5 7.9 ns tPZH OE AorB 1 4.3 5.3 1 6.3 ns tPZL OE A or B 2.1 5.8 7.4 2.1 8.8 ns tPHZ OE AorB 1.5 3.5 7.3 1.5 8.3 ns tPLZ OE A or B 1.5 3 7 1.5 7.5 ns tPZH DIR AorB 1.2 4.5 5.7 1.2 6.7 ns tPZL DIR A or B 2.5 6.5 9 2.5 9.5 ns tPHZ DIR AorB 1.5 3.8 6.7 1.5 7.7 ns tPLZ DIR A or B 1.5 3.8 7.2 1.5 8.2 ns † These parameters are measured with the internal output state of the storage register opposite to 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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