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SN74F74N3 데이터시트(PDF) 4 Page - Texas Instruments |
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SN74F74N3 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 6 page SN54F74, SN74F74 DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET SDFS046A – MARCH 1987 – REVISED OCTOBER 1993 2–4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics (see Note 3) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 5 V, CL = 50 pF, RL = 500 Ω, TA = 25°C VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† UNIT (INPUT) (OUTPUT) ′F74 SN54F74 SN74F74 MIN TYP MAX MIN MAX MIN MAX fmax 100 145 80 100 MHz tPLH CLK QorQ 3 4.9 6.8 3.8 8.5 3 7.8 ns tPHL CLK Q or Q 3.6 5.8 8 4.4 10.5 3.6 9.2 ns tPLH PRE or CLR QorQ 2.4 4.2 6.1 3.2 8 2.4 7.1 ns tPHL PRE or CLR Q or Q 2.7 6.6 9 3.5 11.5 2.7 10.5 ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 3: Load circuits and waveforms are shown in Section 1. |
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