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SN74ACT245DWE4 bảng dữ liệu(PDF) 3 Page - Texas Instruments |
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SN74ACT245DWE4 bảng dữ liệu(HTML) 3 Page - Texas Instruments |
3 / 32 page SN54ACT245, SN74ACT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCAS452E – SEPTEMBER 1994 – REVISED OCTOBER 2002 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Note 3) SN54ACT245 SN74ACT245 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 Dt/Dv 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. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC TA = 25°C SN54ACT245 SN74ACT245 UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX MIN MAX UNIT IOH = 50 mA 4.5 V 4.4 4.49 4.4 4.4 IOH = –50 mA 5.5 V 5.4 5.49 5.4 5.4 VOH IOH = 24 mA 4.5 V 3.88 3.7 3.76 V VOH IOH = –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 mA 4.5 V 0.001 0.1 0.1 0.1 IOL = 50 mA 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 A or B ports‡ VO = VCC or GND 5.5 V ±0.5 ±10 ±5 mA II OE or DIR VI = VCC or GND 5.5 V ±0.1 ±1 ±1 mA ICC VI = VCC or GND, IO = 0 5.5 V 4 80 40 mA DICC§ 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 4.5 pF Cio VO = VCC or GND 5 V 15 pF † Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms. ‡ For I/O ports, the parameter IOZ includes the input leakage current. § 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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