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74LV74A Folha de dados(PDF) 5 Page - Texas Instruments |
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74LV74A Folha de dados(HTML) 5 Page - Texas Instruments |
5 / 16 page SN54LV74A, SN74LV74A DUAL POSITIVEEDGETRIGGERED DTYPE FLIPFLOPS SCLS381L − AUGUST 1997 − REVISED APRIL 2005 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended operating free-air temperature range, VCC = 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 1) PARAMETER TA = 25°C SN54LV74A SN74LV74A UNIT PARAMETER MIN MAX MIN MAX MIN MAX UNIT tw Pulse duration PRE or CLR low 8 9 9 ns tw Pulse duration CLK 8 9 9 ns tsu Setup time before CLK ↑ Data 8 9 9 ns tsu Setup time before CLK ↑ PRE or CLR inactive 7 7 7 ns th Hold time, data after CLK ↑ 0.5 0.5 0.5 ns timing requirements over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER TA = 25°C SN54LV74A SN74LV74A UNIT PARAMETER MIN MAX MIN MAX MIN MAX UNIT tw Pulse duration PRE or CLR low 6 7 7 ns tw Pulse duration CLK 6 7 7 ns tsu Setup time before CLK ↑ Data 6 7 7 ns tsu Setup time before CLK ↑ PRE or CLR inactive 5 5 5 ns th Hold time, data after CLK ↑ 0.5 0.5 0.5 ns timing requirements over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER TA = 25°C SN54LV74A SN74LV74A UNIT PARAMETER MIN MAX MIN MAX MIN MAX UNIT tw Pulse duration PRE or CLR low 5 5 5 ns tw Pulse duration CLK 5 5 5 ns tsu Setup time before CLK ↑ Data 5 5 5 ns tsu Setup time before CLK ↑ PRE or CLR inactive 3 3 3 ns th Hold time, data after CLK ↑ 0.5 0.5 0.5 ns switching characteristics over recommended operating free-air temperature range, VCC = 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 1) PARAMETER FROM TO LOAD TA = 25°C SN54LV74A SN74LV74A UNIT PARAMETER FROM (INPUT) TO (OUTPUT) LOAD CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT fmax CL = 15 pF 50* 100* 40* 40 MHz fmax CL = 50 pF 30 70 25 25 MHz tpd PRE or CLR Q or Q CL = 15 pF 9.8* 14.8* 1* 17* 1 17 ns tpd CLK Q or Q CL = 15 pF 11.1* 16.4* 1* 19* 1 19 ns tpd PRE or CLR Q or Q CL = 50 pF 13 17.4 1 20 1 20 ns tpd CLK Q or Q CL = 50 pF 14.2 20 1 23 1 23 ns * On products compliant to MIL-PRF-38535, this parameter is not production tested. 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. |
Nº de peça semelhante - 74LV74A |
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Descrição semelhante - 74LV74A |
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