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CD74HCT646E 数据表(PDF) 5 Page - Texas Instruments |
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CD74HCT646E 数据表(HTML) 5 Page - Texas Instruments |
5 / 18 page CD54HC646, CD74HCT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCHS278B – APRIL 2003 – REVISED APRIL 2003 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC –0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output drain current per output, IO (VO = 0 to VCC) ±35 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous current through VCC or GND ±50 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2) M package 46 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg –65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions for CD54HC646 (see Note 3) MIN MAX UNIT VCC Supply voltage 2 6 V VCC = 2 V 1.5 VIH High-level input voltage VCC = 4.5 V 3.15 V VCC = 6 V 4.2 VCC = 2 V 0.5 VIL Low-level input voltage VCC = 4.5 V 1.35 V VCC = 6 V 1.8 VI Input voltage 0 VCC V VO Output voltage 0 VCC V VCC = 2 V 1000 tt Input transition (rise and fall) time VCC = 4.5 V 500 ns VCC = 6 V 400 TA Operating free-air temperature –55 125 °C 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. recommended operating conditions for CD74HCT646 (see Note 3) MIN MAX UNIT VCC Supply voltage 4.5 5.5 V VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V VI Input voltage VCC V VO Output voltage VCC V tt Input transition (rise and fall) time 500 ns TA Operating free-air temperature –55 125 °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. |
类似零件编号 - CD74HCT646E |
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类似说明 - CD74HCT646E |
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