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SN74HC645DWG4 Datasheet(PDF) 3 Page - Texas Instruments |
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SN74HC645DWG4 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 14 page SN54HC645, SN74HC645 OCTAL BUS TRANSCEIVERS WITH 3STATE OUTPUTS SCLS304B – JANUARY 1996 – REVISED DECEMBER 2002 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS V TA = 25°C SN54HC645 SN74HC645 UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 1.9 1.998 1.9 1.9 IOH = –20 µA 4.5 V 4.4 4.499 4.4 4.4 VOH VI = VIH or VIL IOH 20 µA 6 V 5.9 5.999 5.9 5.9 V VOH VI VIH or VIL IOH = –6 mA 4.5 V 3.98 4.3 3.7 3.84 V IOH = –7.8 mA 6 V 5.48 5.8 5.2 5.34 2 V 0.002 0.1 0.1 0.1 IOL = 20 µA 4.5 V 0.001 0.1 0.1 0.1 VOL VI = VIH or VIL IOL 20 µA 6 V 0.001 0.1 0.1 0.1 V VOL VI VIH or VIL IOL = 6 mA 4.5 V 0.17 0.26 0.4 0.33 V IOL = 7.8 mA 6 V 0.15 0.26 0.4 0.33 II DIR or OE VI = VCC or 0 6 V ±0.1 ±100 ±1000 ±1000 nA IOZ A or B VO = VCC or 0 6 V ±0.01 ±0.5 ±10 ±5 µA ICC VI = VCC or 0, IO = 0 6 V 8 160 80 µA Ci DIR or OE 2 V to 6 V 3 10 10 10 pF switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM TO V TA = 25°C SN54HC645 SN74HC645 UNIT PARAMETER FROM (INPUT) TO (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 40 105 160 130 tpd A or B B or A 4.5 V 15 21 32 26 ns t d A or B B or A 6 V 12 18 27 22 ns 2 V 125 230 340 290 ten OE A or B 4.5 V 23 46 68 58 ns ten OE A or B 6 V 20 39 58 49 ns 2 V 74 200 300 250 tdis OE A or B 4.5 V 25 40 60 50 ns tdis OE A or B 6 V 21 34 51 43 ns 2 V 20 60 90 75 tt A or B 4.5 V 8 12 18 15 ns t 6 V 6 10 15 13 |
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