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SN74AC244DBR Scheda tecnica(PDF) 3 Page - Texas Instruments |
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SN74AC244DBR Scheda tecnica(HTML) 3 Page - Texas Instruments |
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3 / 22 page  SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Note 3) SN54AC244 SN74AC244 UNIT MIN MAX MIN MAX UNIT VCC Supply voltage 2 6 2 6 V VCC = 3 V 2.1 2.1 VIH High-level input voltage VCC = 4.5 V 3.15 3.15 V VIH High level input voltage VCC = 5.5 V 3.85 3.85 V VCC = 3 V 0.9 0.9 VIL Low-level input voltage VCC = 4.5 V 1.35 1.35 V VIL Low level input voltage VCC = 5.5 V 1.65 1.65 V VI Input voltage 0 VCC 0 VCC V VO Output voltage 0 VCC 0 VCC V VCC = 3 V −12 −12 IOH High-level output current VCC = 4.5 V −24 −24 mA IOH High level output current VCC = 5.5 V −24 −24 mA VCC = 3 V 12 12 IOL Low-level output current VCC = 4.5 V 24 24 mA IOL Low level output current VCC = 5.5 V 24 24 mA Δt/Δv Input transition rise or fall rate 8 8 ns/V TA Operating free-air temperature −55 125 −40 85 °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. |
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