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SN74ACT1284DBLE 数据表(PDF) 4 Page - Texas Instruments |
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SN74ACT1284DBLE 数据表(HTML) 4 Page - Texas Instruments |
4 / 17 page SN54ACT1284, SN74ACT1284 7BIT BUS INTERFACES WITH 3STATE OUTPUTS SCAS459D − NOVEMBER 1994 − REVISED OCTOBER 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended ranges of operating free-air temperature and supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS VCC† SN54ACT1284 SN74ACT1284 UNIT PARAMETER TEST CONDITIONS VCC† MIN TYP MAX MIN TYP MAX UNIT Vhys Input VIT+ − VIT− for all inputs 5 V 0.4 0.4 V Vhys Input hysteresis VIT+ − VIT− for all inputs 4.7 V 0.2 0.2 V B port IOH = −14 mA 4.7 V 2.4 2.4 VOH A port IOH = −50 µA MIN to MAX VCC−0.2 VCC −0.2 V A port IOH = −4 mA 4.7 V 3.7 3.7 B port IOL = 14 mA 4.7 V 0.4 0.4 VOL A port IOL = 50 µA 4.7 V 0.2 0.2 V VOL A port IOL = 4 mA 4.7 V 0.4 0.4 V II VI = VCC or GND 5.5 V ±1 ±1 µA IOZ A or B ports‡ VO = VCC or GND 5.5 V ±20 ±20 µA Ioff B port VI or VO ≤ 7 V 0 V ±100 ±100 µA ICC VI = VCC or GND, IO = 0 5.5 V 1.5 1.5 mA Ci Control inputs VI = VCC or GND 5 V 4 4 pF Cio A or B ports VO = VCC or GND 5 V 12 12 pF ZO B port IOH = −20 mA, IOH = −50 mA 5 V 8 30 8 30 Ω † For I/O ports, the parameter IOZ includes the input leakage current II. ‡ For conditions shown as MIN or MAX, use the appropriate values under recommended operating conditions. switching characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 1) PARAMETER FROM TO SN54ACT1284 SN74ACT1284 UNIT PARAMETER FROM (INPUT) TO (OUTPUT) MIN MAX MIN MAX UNIT tPLH Totem pole A or B B or A 1 20 1 20 ns tPHL Totem pole A or B B or A 1 20 1 20 ns SR Totem pole B output 0.05 0.4 0.05 0.4 V/ns tpd(EN) Totem pole HD B 1 20 1 20 ns tpd(DIS) Totem pole HD B 1 20 1 20 ns tr, tf Open drain A B 120 120 ns PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
类似零件编号 - SN74ACT1284DBLE |
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类似说明 - SN74ACT1284DBLE |
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