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SN74AHC74DGVR 데이터시트(PDF) 4 Page - Texas Instruments |
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SN74AHC74DGVR 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 19 page SN54AHC74, SN74AHC74 DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET SCLS255J – 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 SN54AHC74 SN74AHC74 UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 1.9 2 1.9 1.9 IOH = –50 mA 3 V 2.9 3 2.9 2.9 VOH 4.5 V 4.4 4.5 4.4 4.4 V IOH = –4 mA 3 V 2.58 2.48 2.48 IOH = –8 mA 4.5 V 3.94 3.8 3.8 2 V 0.1 0.1 0.1 IOL = 50 mA 3 V 0.1 0.1 0.1 VOL 4.5 V 0.1 0.1 0.1 V IOL = 4 mA 3 V 0.36 0.5 0.44 IOL = 8 mA 4.5 V 0.36 0.5 0.44 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 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. timing requirements over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) TA = 25°C SN54AHC74 SN74AHC74 UNIT MIN MAX MIN MAX MIN MAX UNIT t Pulse duration PRE or CLR low 6 7 7 ns tw Pulse duration CLK 6 7 7 ns t Setup time before CLK ↑ Data 6 7 7 ns tsu Setup time before CLK ↑ PRE or CLR inactive 5 5 5 ns th Hold time, data after CLK ↑ 0.5 0.5 0.5 ns timing requirements over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) TA = 25°C SN54AHC74 SN74AHC74 UNIT 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 3 3 ns th Hold time, data after CLK ↑ 0.5 0.5 0.5 ns |
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