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SN74HC74DR Folha de dados(PDF) 4 Page - Texas Instruments |
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SN74HC74DR Folha de dados(HTML) 4 Page - Texas Instruments |
4 / 16 page SN54HC74, SN74HC74 DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET SCLS094D – DECEMBER 1982 – REVISED JULY 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended operating free-air temperature range (unless otherwise noted) VCC TA = 25°C SN54HC74 SN74HC74 UNIT VCC MIN MAX MIN MAX MIN MAX UNIT 2 V 6 4.2 5 fclock Clock frequency 4.5 V 31 21 25 MHz 6 V 0 36 0 25 0 29 2 V 100 150 125 PRE or CLR low 4.5 V 20 30 25 t Pulse duration 6 V 17 25 21 ns tw Pulse duration 2 V 80 120 100 ns CLK high or low 4.5 V 16 24 20 6 V 14 20 17 ↑ 2 V 100 150 125 ↑ Data 4.5 V 20 30 25 t Setup time before CLK ↑ 6 V 17 25 21 ns tsu Setup time before CLK ↑ 2 V 25 40 30 ns PRE or CLR inactive 4.5 V 5 8 6 6 V 4 7 5 ↑ 2 V 0 0 0 th Hold time, data after CLK ↑ 4.5 V 0 0 0 ns 6 V 0 0 0 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM TO VCC TA = 25°C SN54HC74 SN74HC74 UNIT PARAMETER (INPUT) (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 6 10 4.2 5 fmax 4.5 V 31 50 21 25 MHz 6 V 36 60 25 29 2 V 70 230 345 290 PRE or CLR Q or Q 4.5 V 20 46 69 58 t d 6 V 15 39 59 49 ns tpd 2 V 70 175 250 220 ns CLK Q or Q 4.5 V 20 35 50 44 6 V 15 30 42 37 2 V 28 75 110 95 tt Q or Q 4.5 V 8 15 22 19 ns 6 V 6 13 19 16 operating characteristics, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance per flip-flop No load 35 pF |
Nº de peça semelhante - SN74HC74DR |
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Descrição semelhante - SN74HC74DR |
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