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SN74ABT823DW Scheda tecnica(PDF) 5 Page - Texas Instruments |
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SN74ABT823DW Scheda tecnica(HTML) 5 Page - Texas Instruments |
5 / 7 page SN54ABT823, SN74ABT823 9-BIT BUS-INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS SCBS158E – JANUARY 1991 – REVISED MAY 1997 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 1) VCC = 5 V, TA = 25°C SN54ABT823 SN74ABT823 UNIT MIN MAX MIN MAX MIN MAX fclock Clock frequency 0 125 0 125 0 125 MHz CLR low 5.5 5.5 5.5 tw Pulse duration CLK high 2.9 2.9 2.9 ns CLK low 3.8 3.8 3.8 ↑ CLR inactive 2.5 2.5 2.5 t Setup time before CLK ↑ Data 2.1 2.1 2.1 ns tsu Setup time before CLK ↑ CLKEN high 2 2 2 ns CLKEN low 3.3 3.3 3.3 ↑ Data 1.3 1.3 1.3 th Hold time after CLK ↑ CLKEN high 1 1 1 ns CLKEN low 2 2 2 switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 5 V, TA = 25°C SN54ABT823 SN74ABT823 UNIT (INPUT) (OUTPUT) MIN TYP MAX MIN MAX MIN MAX fmax 125 200 125 125 MHz tPLH CLK Q 2.1 4.3 5.9 2.1 8.1 2.1 6.8 ns tPHL CLK Q 2.2 4.4 6.1 2.2 7 2.2 6.7 ns tPHL CLR Q 2 4.1 6.3 2 7.3 2 7.1 ns tPZH OE Q 1 3 4.7† 1 6.3 1 6† ns tPZL OE Q 2.2 4.1 5.6 2.2 6.6 2.2 6.5† ns tPHZ OE Q 2.7 4.8 6.5† 2.7 7.7 2.7 7.5† ns tPLZ OE Q 1.9 5 6.4 1.9 7.4 1.9 6.9 ns † This data sheet limit may vary among suppliers. |
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