Datenblatt-Suchmaschine für elektronische Bauteile |
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SN74ALS641ANSRE4 Datenblatt(PDF) 3 Page - Texas Instruments |
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SN74ALS641ANSRE4 Datenblatt(HTML) 3 Page - Texas Instruments |
3 / 15 page SN74ALS641A, SN74ALS642A, SN74AS641 OCTAL BUS TRANSCEIVERS WITH OPEN-COLLECTOR OUTPUTS SDAS300 – MARCH 1995 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN74ALS641A SN74ALS642A UNIT MIN TYP† MAX VIK VCC = 4.5 V, II = – 18 mA – 1.5 V IOH VCC = 4.5 V, VOH = 5.5 V 0.1 mA IOL = 12 mA 0.25 0.4 VOL VCC = 4.5 V IOL = 24 mA 0.35 0.5 V IOL = 48 mA‡ 0.35 0.5 II Control inputs VCC = 5.5 V, VI = 7 V 0.1 mA IIH Control inputs VCC =5 5V VI =2 7V 20 µA IIH A or B ports§ VCC = 5.5 V, VI = 2.7 V 20 µA IIL Control inputs VCC =5 5V VI =0 4V – 0.1 mA IIL A or B ports§ VCC = 5.5 V, VI = 0.4 V – 0.1 mA SN74ALS641A VCC =5 5V Outputs high 25 37 ICC SN74ALS641A VCC = 5.5 V Outputs low 33 47 mA ICC SN74ALS642A VCC =5 5V Outputs high 8 15 mA SN74ALS642A VCC = 5.5 V Outputs low 18 28 † All typical values are at VCC = 5 V, TA = 25°C. ‡ Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V § For I/O ports, the parameters IIH and IIL include the off-state output current. switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 680 Ω, TA = MIN to MAX¶ UNIT (INPUT) (OUTPUT) SN74ALS641A SN74ALS642A MIN MAX MIN MAX tPLH AorB BorA 5 25 10 30 ns tPHL A or B B or A 3 18 5 22 ns tPLH OE AorB 8 30 10 30 ns tPHL OE A or B 8 30 15 38 ns tPLH DIR AorB 8 32 10 30 ns tPHL DIR A or B 8 32 15 38 ns ¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. |
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