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SN74ALS258AN Arkusz danych(PDF) 4 Page - Texas Instruments |
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SN74ALS258AN Arkusz danych(HTML) 4 Page - Texas Instruments |
4 / 9 page SN54ALS257A, SN54ALS258A, SN74ALS257A, SN74ALS258A, SN74AS257, SN74AS258 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS124C – APRIL 1982 – REVISED AUGUST 1996 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54ALS257A SN54ALS258A SN74ALS257A SN74ALS258A UNIT MIN TYP† MAX MIN TYP† MAX VIK VCC = 4.5 V, II = –18 mA –1.5 –1.5 V VCC = 4.5 V to 5.5 V, IOH = –0.4 mA VCC–2 VCC–2 VOH VCC =4 5V IOH = –1 mA 2.4 3.3 V VCC = 4.5 V IOH = –2.6 mA 2.4 3.2 VOH VCC =4 5V IOL = 12 mA 0.25 0.4 0.25 0.4 V VOH VCC = 4.5 V IOL = 24 mA 0.35 0.5 V IOZH VCC = 5.5 V, VO = 2.7 V 20 20 µA IOZL VCC = 5.5 V, VO = 0.4 V –20 –20 µA II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA IIL VCC = 5.5 V, VI = 0.4 V –0.1 –0.1 mA IO‡ VCC = 5.5 V, VO = 2.25 V –20 –112 –30 –112 mA SN54ALS257A Outputs high 3 8 3 6 SN54ALS257A, SN74ALS257A VCC = 5.5 V Outputs low 8 12 8 12 ICC SN74ALS257A Outputs disabled 9 14 9 14 mA ICC SN54ALS258A Outputs high 2.5 5 2.5 4 mA SN54ALS258A, SN74ALS258A VCC = 5.5 V Outputs low 7 11 7 11 SN74ALS258A Outputs disabled 8 13 8 13 † 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. switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX§ UNIT SN54ALS257A SN74ALS257A MIN MAX MIN MAX tPLH AorB Any Y 2 12 2 10 ns tPHL A or B Any Y 2 14 2 12 ns tPLH A /B Any Y 4 21 6 18 ns tPHL A/B Any Y 6 25 6 22 ns tPZH OE Any Y 3 20 4 16 ns tPZL OE Any Y 4 22 5 18 ns tPHZ OE Any Y 2 12 2 10 ns tPLZ OE Any Y 2 35 4 15 ns § For conditions shown MIN or MAX, use the appropriate value specified under recommended operating conditions. |
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