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CD54AC74 Datasheet(PDF) 5 Page - Texas Instruments |
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5 page 
CD54AC74, CD74AC74 DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET SCHS231D – SEPTEMBER 1998 – REVISED DECEMBER 2002 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended operating free-air temperature range, VCC = 1.5 V, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) –55 °C to 125 °C –40 °C to 85 °C UNIT (INPUT) (OUTPUT) MIN MAX MIN MAX fmax 9 10 MHz tPLH CLK QQ 125 114 ns tPHL CLK Q or Q 125 114 ns tPLH PRE or CLR QorQ 132 120 ns tPHL PRE or CLR Q or Q 144 131 ns switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) –55 °C to 125 °C –40 °C to 85 °C UNIT (INPUT) (OUTPUT) MIN MAX MIN MAX fmax 79 90 MHz tPLH CLK QQ 3.5 14 3.6 12.7 ns tPHL CLK Q or Q 3.5 14 3.6 12.7 ns tPLH PRE or CLR QorQ 3.7 14.7 3.8 13.4 ns tPHL PRE or CLR Q or Q 4 16.1 4.1 14.6 ns switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) –55 °C to 125 °C –40 °C to 85 °C UNIT (INPUT) (OUTPUT) MIN MAX MIN MAX fmax 110 125 MHz tPLH CLK QQ 2.5 10 2.6 9.1 ns tPHL CLK Q or Q 2.5 10 2.6 9.1 ns tPLH PRE or CLR QorQ 2.6 10.5 2.7 9.5 ns tPHL PRE or CLR Q or Q 2.9 11.5 3 10.4 ns operating characteristics, TA = 25°C PARAMETER TYP UNIT Cpd Power dissipation capacitance 55 pF |
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