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SN74SSTL16847DGG bảng dữ liệu(PDF) 3 Page - Texas Instruments |
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3 / 6 page SN74SSTL16847 20-BIT SSTL_3 INTERFACE BUFFER WITH 3-STATE OUTPUTS SCBS709A – OCTOBER 1997 – REVISED MAY 1998 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Note 4) MIN NOM MAX UNIT VCC Supply voltage VDDQ 3.6 V VDDQ Output supply voltage 3 3.6 V VREF Reference voltage (VREF = 0.45 × VDDQ) 1.3 1.5 1.7 V VTT Termination voltage VREF–50mV VREF VREF+50mV V VI Input voltage 0 VCC V VIH AC high-level input voltage All inputs VREF+400mV V VIL AC low-level input voltage All inputs VREF–400mV V VIH DC high-level input voltage All inputs VREF+200mV V VIL DC low-level input voltage All inputs VREF–200mV V IOH High-level output current –20 mA IOL Low-level output current 20 mA TA Operating free-air temperature 0 70 _C NOTE 4: 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 VCC MIN TYP† MAX UNIT VIK II = –18 mA 3 V –1.2 V IOH = –100 µA 3 V to 3.6 V VCC–0.2 VOH IOH = –16 mA 3V 2.2 V IOH = –20 mA 3 V 2.1 IOL = 100 µA 3 V to 3.6 V 0.2 VOL IOL = 16 mA 3V 0.5 V IOL = 20 mA 3 V 0.55 II Data inputs, OE VI = 2.1 V or 0.9 V, VREF = 1.3 V or 1.7 V 36 V ±5 µA II VREF VREF = 1.3 V or 1.7 V 3.6 V ±150 µA IOZ VO = 0.9 V or 2.1 V 3.6 V ±10 µA ICC VI = 2.1 V or 0.9 V, IO = 0 3.6 V 90 mA Ci Control inputs VI =2 1Vor0 9V 33 V 2 pF Ci A port VI = 2.1 V or 0.9 V 3.3 V 2.5 pF Co Y port VO = 2.1 V or 0.9 V 3.3 V 3.5 pF † All typical values are at VCC = 3.3 V, TA = 25°C. |
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