Datenblatt-Suchmaschine für elektronische Bauteile |
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SN74ALS244CDWRG4 Datenblatt(PDF) 5 Page - Texas Instruments |
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SN74ALS244CDWRG4 Datenblatt(HTML) 5 Page - Texas Instruments |
5 / 17 page SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142C – JULY 1987 – REVISED AUGUST 1995 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54AS244A SN74AS244A 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 = 4.5 V to 5.5 V, IOH = – 2 mA VCC –2 VCC –2 VOH IOH = – 3 mA 2.4 3.4 2.4 3.4 V VOH VCC = 4.5 V IOH = – 12 mA 2.4 V IOH = – 15 mA 2.4 VOL VCC =4 5V IOL = 48 mA 0.55 V VOL VCC = 4.5 V IOL = 64 mA 0.55 V IOZH VCC = 5.5 V, VO = 2.7 V 50 50 µA IOZL VCC = 5.5 V, VO = 0.4 V –50 –50 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 OE VCC =5 5V VI =0 4V – 0.5 – 0.5 mA IIL A VCC = 5.5 V, VI = 0.4 V –1 –1 mA IO‡ VCC = 5.5 V, VO = 2.25 V –50 – 150 –50 – 150 mA Outputs high 22 34 22 34 ICC VCC = 5.5 V Outputs low 60 90 60 90 mA Outputs disabled 34 54 34 54 † 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 SN54AS244A SN74AS244A MIN MAX MIN MAX tPLH A Y 2 9 2 6.2 ns tPHL A Y 1 7 1 6.2 ns tPZH OE Y 1 10 1 9 ns tPZL OE Y 2 8 2 7.5 ns tPHZ OE Y 1 6.5 1 6 ns tPLZ OE Y 1 10.5 1 9 ns § For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. |
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