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SN74ACT244-Q1 Scheda tecnica(PDF) 3 Page - Texas Instruments |
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SN74ACT244-Q1 Scheda tecnica(HTML) 3 Page - Texas Instruments |
3 / 8 page SN74ACT244Q1 OCTAL BUFFER/DRIVER WITH 3STATE OUTPUTS SCAS766B − APRIL 2004 − REVISED JANUARY 2008 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC TA = 25°C MIN MAX UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX UNIT IOH = −50 A 4.5 V 4.4 4.49 4.4 IOH = −50 µA 5.5 V 5.4 5.49 5.4 VOH IOH = −24 mA 4.5 V 3.86 3.76 V VOH IOH = −24 mA 5.5 V 4.86 4.76 V IOH = −75 mA† 5.5 V 3.85 IOL = 50 A 4.5 V 0.001 0.1 0.1 IOL = 50 µA 5.5 V 0.001 0.1 0.1 VOL IOL = 24 mA 4.5 V 0.36 0.44 V VOL IOL = 24 mA 5.5 V 0.36 0.44 V IOL = 75 mA† 5.5 V 1.65 IOZ VO = VCC or GND 5.5 V ±0.25 ±2.5 µA II VI = VCC or GND 5.5 V ±0.1 ±1 µA ICC VI = VCC or GND, IO = 0 5.5 V 4 40 µA ∆ICC‡ One input at 3.4 V, Other inputs at GND or VCC 5.5 V 0.6 1.5 mA Ci VI = VCC or GND 5 V 2.5 pF Co VI = VCC or GND 5 V 8 pF † Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms. ‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC. switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER FROM TO TA = 25°C MIN MAX UNIT PARAMETER FROM (INPUT) TO (OUTPUT) MIN TYP MAX MIN MAX UNIT tPLH A Y 2 6.5 9 1.5 10 ns tPHL A Y 2 7 9 1.5 10 ns tPZH OE Y 1.5 7 8.5 1 9.5 ns tPZL OE Y 2 7 9.5 1.5 10.5 ns tPHZ OE Y 2 8 9.5 1.5 10.5 ns tPLZ OE Y 2.5 7.5 10 2 10.5 ns operating characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance per buffer/driver CL = 50 pF, f = 1 MHz 45 pF |
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