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SN54ACT244J Datasheet(PDF) 3 Page - Texas Instruments |
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SN54ACT244J Datasheet(HTML) 3 Page - Texas Instruments |
3 / 5 page SN54ACT244, SN74ACT244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS517B – JUNE 1995 – REVISED MAY 1996 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Note 3) SN54ACT244 SN74ACT244 UNIT MIN MAX MIN MAX UNIT VCC Supply voltage 4.5 5.5 4.5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V VI Input voltage 0 VCC 0 VCC V VO Output voltage 0 VCC 0 VCC V IOH High-level output current –24 –24 mA IOL Low-level output current 24 24 mA ∆t/∆v Input transition rise or fall rate 0 8 0 8 ns/V TA Operating free-air temperature –55 125 –40 85 °C NOTE 3: Unused inputs must be held high or low to prevent them from floating. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC TA = 25°C SN54ACT244 SN74ACT244 UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX MIN MAX UNIT IOH =50 µA 4.5 V 4.4 4.49 4.4 4.4 IOH = – 50 µA 5.5 V 5.4 5.49 5.4 5.4 VOH I24 A 4.5 V 3.86 3.7 3.76 V VOH IOL = – 24 mA 5.5 V 4.86 4.7 4.76 V IOH = – 50 mA† 5.5 V 3.85 IOH = –75 mA† 5.5 V 3.85 IOL =50 µA 4.5 V 0.001 0.1 0.1 0.1 IOL = 50 µA 5.5 V 0.001 0.1 0.1 0.1 VOL IOL =24mA 4.5 V 0.36 0.5 0.44 V VOL IOL = 24 mA 5.5 V 0.36 0.5 0.44 V IOL = 50 mA† 5.5 V 1.65 IOL = 75 mA† 5.5 V 1.65 IOZ VO = VCC or GND 5.5 V ±0.25 ±5 ±2.5 µA II VI = VCC or GND 5.5 V ±0.1 ±1 ±1 µA ICC VI = VCC or GND, IO = 0 5.5 V 4 80 40 µA ∆ICC‡ One input at 3.4 V, Other inputs at GND or VCC 5.5 V 0.6 1.6 1.5 mA Ci VI = VCC or GND 5 V 2.5 pF Co VI = VCC or GND 5 V 8 pF † Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms. ‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC. |
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