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SN74ALS1640AN 数据表(PDF) 3 Page - Texas Instruments |
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SN74ALS1640AN 数据表(HTML) 3 Page - Texas Instruments |
3 / 5 page SN74ALS1640A, SN74ALS1645A OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDAS246B – DECEMBER 1982 – REVISED FEBRUARY 1997 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN74ALS1640A SN74ALS1645A UNIT MIN TYP† MAX VIK VCC = 4.5 V, II = –18 mA –1.5 V VCC = 4.5 V to 5.5 V, IOH = –0.4 mA VCC–2 VOH VCC =4 5V IOH = –3 mA 2.4 3.2 V VCC = 4.5 V IOH = –15 mA 2 VOL VCC =4 5V IOL = 8 mA 0.25 0.4 V VOL VCC = 4.5 V IOL = 16 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 IO§ VCC = 5.5 V, VO = 2.25 V –30 –112 mA ICC SN74ALS1640A VCC = 5.5 V 18 32 mA ICC SN74ALS1645A VCC = 5.5 V 25 38 mA † All typical values are at VCC = 5 V, TA = 25°C. ‡ For I/O ports, the parameters IIH and IIL include the off-state output current. § 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 SN74ALS1640A SN74ALS1645A MIN MAX MIN MAX tPLH AorB BorA 4 15 2 13 ns tPHL A or B B or A 2 10 2 13 ns tPZH OE AorB 5 20 8 25 ns tPZL OE A or B 5 22 8 25 ns tPHZ OE AorB 2 10 2 12 ns tPLZ OE A or B 5 13 3 18 ns ¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. |
类似零件编号 - SN74ALS1640AN |
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类似说明 - SN74ALS1640AN |
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