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SN74ACT1284DBRE4 Folha de dados(PDF) 5 Page - Texas Instruments |
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SN74ACT1284DBRE4 Folha de dados(HTML) 5 Page - Texas Instruments |
5 / 12 page SN54ACT1284, SN74ACT1284 7BIT BUS INTERFACES WITH 3STATE OUTPUTS SCAS459D − NOVEMBER 1994 − REVISED OCTOBER 2003 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION 50% VCC tPHL tPLH From B Output Under Test A-TO-B LOAD (totem pole) 1.5 V VOLTAGE WAVEFORMS MEASURED AT TP1 PROPAGATION DELAY TIMES (A to B) 3 V VOH VOL VOL 0 V 62 Ω CL = 50 pF (see Note A) 33 Ω TP1 VCC CL = 50 pF (see Note A) Sink Load Source Load 1.5 V 1.5 V VOH VOL VOH − 1.4 V VOH − 1.4 V VOL + 1.4 V 62 Ω tPHL tPLH tf A-TO-B LOAD (open drain) 1.5 V VOLTAGE WAVEFORMS MEASURED AT TP1 (B SIDE) 3 V VOH VOL 0 V TP1 VCC CL = 50 pF (see Note A) 1.5 V VOL (see Note E) 0.8 V 500 Ω From B Output tr 2 V 2 V 0.8 V tPHL tPLH 1.5 V VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES (B to A) 3 V VOH VOL VOL 0 V 1.5 V 1.5 V Output 50% VCC B-TO-A LOAD (totem pole) CL = 50 pF (see Note A) 500 Ω From A Output Under Test Input (see Note C) Output (see Note D) Input (see Note F) Input (see Note F) NOTES: A. CL includes probe and jig capacitance. B. The outputs are measured one at a time with one transition per measurement. C. Input rise and fall times are 3 ns, 150 ns < pulse duration <10 µs for both low-to-high and high-to-low transitions. D. Slew rate is defined as 10% and 90% of the transition times. E. Rise and fall times, open drain, are <120 ns. F. Input rise and fall times are 3 ns. Figure 1. Load Circuits and Voltage Waveforms |
Nº de peça semelhante - SN74ACT1284DBRE4 |
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Descrição semelhante - SN74ACT1284DBRE4 |
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