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SN74ALS621A 数据表(PDF) 6 Page - Texas Instruments |
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SN74ALS621A 数据表(HTML) 6 Page - Texas Instruments |
6 / 15 page SN74ALS620A, SN74ALS621A, SN74ALS623A, SN74AS623 OCTAL BUS TRANSCEIVERS SDAS226A – DECEMBER 1982 – REVISED JANUARY 1995 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN74ALS621A UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = – 18 mA – 1.5 V IOH VCC = 4.5 V, VOH = 5.5 V 0.1 mA VOL VCC =4 5V IOL = 24 mA 0.35 0.5 V VOL VCC = 4.5 V IOL = 48 mA‡ 0.35 0.5 V II Control inputs VCC =5 5V VI = 7 V 0.1 mA II A or B ports VCC = 5.5 V VI = 5.5 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 ICC VCC =5 5V Outputs high 29 40 mA ICC VCC = 5.5 V Outputs low 35 48 mA † 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) SN74ALS621A MIN MAX tPLH A B 10 33 ns tPHL A B 5 20 ns tPLH B A 10 33 ns tPHL B A 5 20 ns tPLH OEBA A 10 39 ns tPHL OEBA A 12 35 ns tPLH OEAB B 10 39 ns tPHL OEAB B 12 35 ns ¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. |
类似零件编号 - SN74ALS621A |
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类似说明 - SN74ALS621A |
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