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SN74HC646DWR Datasheet(PDF) 5 Page - Texas Instruments |
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SN74HC646DWR Datasheet(HTML) 5 Page - Texas Instruments |
5 / 16 page SN54HC646, SN74HC646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCLS150C – DECEMBER 1982 – REVISED MARCH 2003 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Note 4) SN54HC646 SN74HC646 UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 2 5 6 2 5 6 V VCC = 2 V 1.5 1.5 VIH High-level input voltage VCC = 4.5 V 3.15 3.15 V VCC = 6 V 4.2 4.2 VCC = 2 V 0.5 0.5 VIL Low-level input voltage VCC = 4.5 V 1.35 1.35 V VCC = 6 V 1.8 1.8 VI Input voltage 0 VCC 0 VCC V VO Output voltage 0 VCC 0 VCC V VCC = 2 V 1000 1000 tt Input transition (rise and fall) time VCC = 4.5 V 500 500 ns VCC = 6 V 400 400 TA Operating free-air temperature –55 125 –40 85 °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 TA = 25°C SN54HC646 SN74HC646 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 6 V 5.9 5.999 5.9 5.9 V IOH = –6 mA 4.5 V 3.98 4.3 3.7 3.84 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 6 V 0.001 0.1 0.1 0.1 V IOL = 6 mA 4.5 V 0.17 0.26 0.4 0.33 IOL = 7.8 mA 6 V 0.15 0.26 0.4 0.33 II Control inputs 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 Control inputs 2 V to 6 V 3 10 10 10 pF PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
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