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SN74AS137N Fiches technique(PDF) 4 Page - Texas Instruments |
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SN74AS137N Fiches technique(HTML) 4 Page - Texas Instruments |
4 / 15 page SN54ALS137A, SN74ALS137A, SN74AS137 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS WITH ADDRESS LATCHES SDAS203C – APRIL 1982 – REVISED JANUARY 1995 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† UNIT (INPUT) (OUTPUT) SN54ALS137A SN74ALS137A MIN MAX MIN MAX tPLH ABC Y 5 25 5 20 ns tPHL A, B, C Y 6 25 6 20 ns tPLH G2 Y 4 15 3 12 ns tPHL G2 Y 5 18 4 15 ns tPLH G1 Y 5 21 4 17 ns tPHL G1 Y 5 19 4 15 ns tPLH LE Y 7 27 6 22 ns tPHL LE Y 7 25 7 20 ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA: SN74AS137 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 SN74AS137 UNIT 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 –2 mA IOL Low-level output current 20 mA tw Pulse duration, LE low 6.5 ns tsu Setup time at A, B, and C before LE ↑ 4 ns th Hold time at A, B, and C after LE ↑ 1 ns TA Operating free-air temperature 0 70 °C |
Numéro de pièce similaire - SN74AS137N |
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Description similaire - SN74AS137N |
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