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SN74BCT245DB Folha de dados(PDF) 3 Page - Texas Instruments |
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SN74BCT245DB Folha de dados(HTML) 3 Page - Texas Instruments |
3 / 7 page SN54BCT245, SN74BCT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994 2–3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions SN54BCT245 SN74BCT245 UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V IIK Input clamp current –18 –18 mA IOH High level output current A port –3 –3 mA IOH High-level output current B port –12 –15 mA IOL Low level output current A port 20 24 mA IOL Low-level output current B port 48 64 mA TA Operating free-air temperature –55 125 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54BCT245 SN74BCT245 UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V A port VCC =4 5V IOH = –1 mA 2.5 3.4 2.5 3.4 A port VCC = 4.5 V IOH = – 3 mA 2.4 3.3 2.4 3.3 VOH IOH = – 3 mA 2.4 3.3 2.4 3.3 V B port VCC = 4.5 V IOH = –12 mA 2 3.2 IOH = – 15 mA 2 3.1 A port VCC =4 5V IOL = 20 mA 0.3 0.5 VOL A port VCC = 4.5 V IOL = 24 mA 0.35 0.5 V VOL B port VCC =4 5V IOL = 48 mA 0.38 0.55 V B port VCC = 4.5 V IOL = 64 mA 0.42 0.55 I A or B port VCC =5 5V VI =5 5V 1 1 mA II Control input VCC = 5.5 V, VI = 5.5 V 0.1 0.1 mA I ‡ A or B port VCC =5 5V VI =2 7V 70 70 µA IIH‡ Control input VCC = 5.5 V, VI = 2.7 V 20 20 µA I ‡ A or B port VCC =5 5V VI =0 5V – 0.65 – 0.65 mA IIL‡ Control input VCC = 5.5 V, VI = 0.5 V –1.2 –1.2 mA I § A port VCC =5 5V VO =0 –60 –150 –60 –150 mA IOS§ B port VCC = 5.5 V, VO = 0 –100 – 225 –100 – 225 mA ICCL A to B VCC = 5.5 V 57 90 57 90 mA ICCH A to B VCC = 5.5 V 36 57 36 57 mA ICCZ VCC = 5.5 V 10 15 10 15 mA Ci Control input VCC = 5 V, VI = 2.5 V or 0.5 V 7 7 pF Ci A to B VCC =5V VO =2 5Vor0 5V 9 9 pF Cio B to A VCC = 5 V, VO = 2.5 V or 0.5 V 12 12 pF † All typical values are at VCC = 5 V, TA = 25°C. ‡ For I/O ports, the parameters IIH and IIL include the off-state output current. § Not more than one output should be tested at a time, and the duration of the test should not exceed one second. |
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Descrição semelhante - SN74BCT245DB |
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