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SN74BCT25245NT 数据表(PDF) 3 Page - Texas Instruments |
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SN74BCT25245NT 数据表(HTML) 3 Page - Texas Instruments |
3 / 5 page SN54BCT25245, SN74BCT25245 25- Ω OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS053B – MAY 1990 – REVISED APRIL 1994 2–3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions SN54BCT25245 SN74BCT25245 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 –53 –80 mA IOH High-level output current B port –3 –3 mA IOL Low level output current A port 125 188 mA IOL Low-level output current B port 20 24 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 SN54BCT25245 SN74BCT25245 UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V VCC =4 5V IOH = – 53 mA 2 VOH A port VCC = 4.5 V IOH = – 80 mA 2 V VOH VCC = 4.75 V, IOH = – 3 mA 2.7 V B port VCC = 4.5 V, IOH = – 3 mA 2.4 3.3 2.4 3.3 IOL = 94 mA 0.38 0.55 0.42 0.55 A port VCC = 4.5 V IOL = 125 mA 0.8 VOL IOL = 188 mA 0.7 V B port VCC =4 5V IOL = 20 mA 0.3 0.5 B port VCC = 4.5 V IOL = 24 mA 0.35 0.5 I A or B port VCC =5 5V VI =5 5V 0.25 0.25 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 – 0.6 – 0.6 mA IIL‡ Control input VCC = 5.5 V, VI = 0.5 V –0.6 –0.6 mA IOS§ B port only¶ VCC = 5.5 V, VO = 0 –60 – 150 –60 – 150 mA ICCH A to B VCC =5 5V 36 46 36 46 mA ICCH B to A VCC = 5.5 V 63 80 63 80 mA ICCL A to B VCC =5 5V 48 60 48 60 mA ICCL B to A VCC = 5.5 V 95 125 95 125 mA ICCZ VCC = 5.5 V 12 16 12 16 mA Ci Control input VCC = 5 V, VI = 2.5 V or 0.5 V 8 8 pF Ci A port VCC =5V VO =2 5Vor0 5V 18 18 pF Cio B port VCC = 5 V, VO = 2.5 V or 0.5 V 8 8 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. ¶ Testing for this parameter on the A port is not recommended. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
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类似说明 - SN74BCT25245NT |
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