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SN74ALS236N 데이터시트(PDF) 7 Page - Texas Instruments |
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SN74ALS236N 데이터시트(HTML) 7 Page - Texas Instruments |
7 / 11 page SN74ALS236 64 × 4 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY SDAS107C – OCTOBER 1986 – REVISED APRIL 1998 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 V VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V IOH High level output current Q outputs – 2.6 mA IOH High-level output current IR and OR – 0.4 mA IOL Low level output current Q outputs 24 mA IOL Low-level output current IR and OR 8 mA TA Operating free-air temperature 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = – 18 mA – 1.2 V Any Q VCC =4 5V IOH = – 1 mA VOH Any Q VCC = 4.5 V IOH = – 2.6 mA 2.4 3.2 V IR, OR VCC = 4.5 V, IOH = – 0.4 mA 2.7 3.4 Any Q VCC =4 5V IOL = 12 mA 0.25 0.4 VOL Any Q VCC = 4.5 V IOL = 24 mA 0.35 0.5 V VOL IR OR VCC =4 5V IOL = 4 mA 0.25 0.4 V IR, OR VCC = 4.5 V IOL = 8 mA 0.35 0.5 II VCC = 5.5 V, VI = 7 V 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 µA IIL VCC = 5.5 V, VI = 0.4 V – 0.1 mA IO‡ VCC = 5.5 V, VO = 2.25 V –30 –112 mA ICC VCC =5 5V Low 100 145 mA ICC VCC = 5.5 V High 97 142 mA † All typical values are at VCC = 5 V, TA = 25°C. ‡ The output conditions have been chosen to produce a current that closely approximates one-half of the true short-circuit output current, IOS. timing requirements over recommended operating conditions (unless otherwise noted) (see Figure 5) MIN MAX UNIT fclock Clock frequency SI or SO 30 MHz t Pulse duration SI or SO High or low 15 ns tw Pulse duration RST Low 15 ns ↑ Data 0 tsu Setup time before SI ↑ RST High (inactive) 15 ns th Hold time, data after SI ↑ 17 ns |
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