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SN74ALS245A-1DW датащи(PDF) 5 Page - Texas Instruments |
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SN74ALS245A-1DW датащи(HTML) 5 Page - Texas Instruments |
5 / 16 page SN54ALS245A, SN54AS245, SN74ALS245A, SN74AS245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDAS272A – NOVEMBER 1994 – REVISED JANUARY 2003 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54AS245 SN74AS245 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 3.2 2.4 3.2 V VOH VCC = 4.5 V IOH = – 12 mA 2 V IOH = – 15 mA 2 VOL VCC =4 5V IOL = 48 mA 0.3 0.55 V VOL VCC = 4.5 V IOL = 64 mA 0.35 0.55 V II Control inputs VCC =5 5V VI = 7 V 0.1 0.1 mA II A or B ports VCC = 5.5 V VI = 5.5 V 0.1 0.1 mA IIH Control inputs VCC =5 5V VI =2 7V 50 20 µA IIH A or B ports‡ VCC = 5.5 V, VI = 2.7 V 70 70 µA IIL Control inputs VCC =5 5V VI =0 4V – 0.5 – 0.5 mA IIL A or B ports‡ VCC = 5.5 V, VI = 0.4 V – 0.75 – 0.75 mA IO§ VCC = 5.5 V, VO = 2.25 V – 50 – 150 – 50 – 150 mA Outputs high 62 97 62 97 ICC VCC = 5.5 V Outputs low 95 143 95 143 mA Outputs disabled 79 123 79 123 † All typical values are 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 SN54AS245 SN74AS245 MIN MAX MIN MAX tPLH AorB BorA 2 9.5 2 7.5 ns tPHL A or B B or A 2 9 2 7 ns tPZH OE AorB 2 11 2 9 ns tPZL OE A or B 2 10.5 2 8.5 ns tPHZ OE AorB 2 7.5 2 5.5 ns tPLZ OE A or B 2 12 2 9.5 ns ¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. |
Аналогичный номер детали - SN74ALS245A-1DW |
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Аналогичное описание - SN74ALS245A-1DW |
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