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SN74ALS666 データシート(PDF) 4 Page - Texas Instruments |
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SN74ALS666 データシート(HTML) 4 Page - Texas Instruments |
4 / 12 page SN74ALS666, SN74ALS667 8-BIT D-TYPE TRANSPARENT READ-BACK LATCHES WITH 3-STATE OUTPUTS SDAS227A – JUNE 1984 – REVISED JANUARY 1995 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing diagram Input Data tdis th tsu† Read Back Data Bus LE Q OERB Input Data tpd tsu tpd CLR = H, PRE = H, OE1 = L, OE2 = L. † This setup time ensures the read-back circuit does not create a conflict on the input data bus. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI (all inputs except D inputs) 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage applied to D inputs and to disabled 3-state outputs 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA: SN74ALS666, SN74ALS667 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . Storage temperature range – 65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. recommended operating conditions SN74ALS666 SN74ALS667 UNIT MIN NOM MAX 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 – 2.6 mA IOH High-level output current D – 0.4 mA IOL Low level output current Q 24 mA IOL Low-level output current D 8 mA LE high 10 tw Pulse duration CLR low 10 ns PRE low 10 t Setup time Data before LE ↓ 10 ns tsu Setup time Data before OERB ↓ 10 ns th Hold time, data after LE ↓ 5 ns TA Operating free-air temperature 0 70 °C |
同様の部品番号 - SN74ALS666 |
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同様の説明 - SN74ALS666 |
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