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54ACT16646WD Datasheet(PDF) 8 Page - Texas Instruments |
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54ACT16646WD Datasheet(HTML) 8 Page - Texas Instruments |
8 / 14 page 54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCAS127B – MARCH 1990 – REVISED APRIL 1996 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended ranges of supply voltage and operating free-air temperature, (unless otherwise noted) (see Figure 2) PARAMETER FROM TO TA = 25°C 54ACT16646 74ACT16646 UNIT PARAMETER (INPUT) (OUTPUT) MIN TYP MAX MIN MAX MIN MAX UNIT fmax 90 90 90 MHz tPLH AorB BorA 3.9 7.5 9.4 3.9 11.5 3.9 10.6 ns tPHL A or B B or A 3.4 7.6 10.6 3.4 12.2 3.4 11.4 ns tPZH OE AorB 3.2 7.7 10.8 3.2 12.9 3.2 11.9 ns tPZL OE A or B 4.2 9 12.2 4.2 14.6 4.2 13.5 ns tPHZ OE AorB 5.3 7.7 9.6 5.3 10.4 5.3 10.2 ns tPLZL OE A or B 4.9 7.3 9.2 4.9 10.3 4.9 9.9 ns tPLH CLKBA or CLKAB AorB 4.9 8.9 11.1 4.9 13.1 4.9 12.2 ns tPHL CLKBA or CLKAB A or B 5.1 9 11 5.1 13.1 5.1 12.3 ns tPLH SAB or SBA{ AorB 5.2 10.3 13.8 5.2 17.2 5.2 15.6 ns tPHL SAB or SBA (with A or B high) A or B 4.9 8.2 10.6 4.9 12.5 4.9 11.7 ns tPLH SBA or SAB{ AorB 4.3 7.8 9.9 4.3 12.1 4.3 11.1 ns tPHL SBA or SAB (with A or B high) A or B 5.9 11.2 14.9 5.9 18.2 5.9 16.7 ns tPZH DIR AorB 4.5 9.5 13.6 4.5 16.2 4.5 15.2 ns tPZL DIR A or B 4.3 9.2 11.8 4.3 14.2 4.3 13.1 ns tPHZ DIR AorB 4.5 7.9 10.2 4.5 11.2 4.5 10.8 ns tPLZ DIR A or B 4.4 7.5 9.8 4.4 10.8 4.4 10.4 ns † These parameters are measured with the internal output state of the storage register opposite to that of the bus input. operating characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT C d Power dissipation capacitance per transceiver Outputs enabled CL =50 pF f=1MHz 58 pF Cpd Power dissipation capacitance per transceiver Outputs disabled CL = 50 pF, f = 1 MHz 13 pF 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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