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SN74AHCT74DRE4 Scheda tecnica(PDF) 4 Page - Texas Instruments |
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SN74AHCT74DRE4 Scheda tecnica(HTML) 4 Page - Texas Instruments |
4 / 25 page SN54AHCT74, SN74AHCT74 DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET SCLS263N – DECEMBER 1995 – REVISED JULY 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC TA = 25°C SN54AHCT74 SN74AHCT74 UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX MIN MAX UNIT VOH IOH = –50 mA 45 V 4.4 4.5 4.4 4.4 V VOH IOH = –8 mA 4.5 V 3.94 3.8 3.8 V VOL IOL = 50 mA 45 V 0.1 0.1 0.1 V VOL IOL = 8 mA 4.5 V 0.36 0.44 0.44 V II VI = 5.5 V or GND 0 V to 5.5 V ±0.1 ±1* ±1 mA ICC VI = VCC or GND, IO = 0 5.5 V 2 20 20 mA ∆ICC† One input at 3.4 V, Other inputs at VCC or GND 5.5 V 1.35 1.5 1.5 mA Ci VI = VCC or GND 5 V 2 10 10 pF * On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V. † This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC. 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 SN54AHCT74 SN74AHCT74 UNIT PARAMETER MIN MAX MIN MAX MIN MAX UNIT t Pulse duration PRE or CLR low 5 5 5 ns tw Pulse duration CLK 5 5 5 ns t Setup time before CLK ↑ Data 5 5 5 ns tsu Setup time before CLK ↑ PRE or CLR inactive 3.5 3.5 3.5 ns th Hold time, data after CLK ↑ 0 0 0 ns switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER FROM TO LOAD TA = 25°C SN54AHCT74 SN74AHCT74 UNIT PARAMETER (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT f CL = 15 pF 100** 160** 80** 80 MHz fmax CL = 50 pF 80 140 65 65 MHz tPLH PRE or CLR QorQ CL =15 pF 7.6** 10.4** 1** 12** 1 12 ns tPHL PRE or CLR Q or Q CL = 15 pF 7.6** 10.4** 1** 12** 1 12 ns tPLH CLK QQ CL =15 pF 5.8** 7.8** 1** 9** 1 9 ns tPHL CLK Q or Q CL = 15 pF 5.8** 7.8** 1** 9** 1 9 ns tPLH PRE CLR QQ CL =50 pF 8.1 11.4 1 13 1 13 ns tPHL PRE or CLR Q or Q CL = 50 pF 8.1 11.4 1 13 1 13 ns tPLH CLK QorQ CL =50 pF 6.3 8.8 1 10 1 10 ns tPHL CLK Q or Q CL = 50 pF 6.3 8.8 1 10 1 10 ns ** On products compliant to MIL-PRF-38535, this parameter is not production tested. |
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