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74LVT244ADB Arkusz danych(PDF) 7 Page - NXP Semiconductors |
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74LVT244ADB Arkusz danych(HTML) 7 Page - NXP Semiconductors |
7 / 15 page 74LVT_LVTH244A_4 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 04 — 3 September 2008 7 of 15 NXP Semiconductors 74LVT244A; 74LVTH244A 3.3 V octal buffer/line driver; 3-state [1] All typical values are at VCC = 3.3 V and Tamb = 25 °C. 11. Waveforms tPLZ LOW to OFF-state propagation delay see Figure 6 VCC = 2.7 V - - 5.6 ns VCC = 3.0 V to 3.6 V 1.8 3.3 5.1 ns Table 7. Dynamic characteristics …continued Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7. Symbol Parameter Conditions Min Typ Max Unit Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig 5. Propagation delay input (nAn) to output (nYn) propagation delays Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig 6. 3-state output enable and disable times mna171 nAn input nYn output tPLH tPHL GND VI VM VM VM VM VOH VOL 001aae464 tPZL nYn output nYn output nOE input VOL VOH 3.0 V VI VM GND 0 V tPLZ tPZH tPHZ VX VY VM VM Table 8. Measurement points Input Output VM VM VX VY 1.5 V 1.5 V VOL + 0.3 V VOH − 0.3 V |
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