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74LVT245B 数据表(PDF) 7 Page - NXP Semiconductors |
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74LVT245B 数据表(HTML) 7 Page - NXP Semiconductors |
7 / 15 page 74LVT245B_2 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 02 — 8 May 2008 7 of 15 NXP Semiconductors 74LVT245B 3.3 V octal transceiver with direction pin (3-state) [1] Typical values are measured at Tamb =25 °C and VCC = 3.3 V 11. Waveforms tPLZ LOW to OFF-state propagation delay see Figure 6 VCC = 2.7 V - - 5.1 ns VCC = 3.3 V ± 0.3 V 2.2 3.4 5.0 ns Table 7. Dynamic characteristics …continued Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7. Symbol Parameter Conditions −40 °C to +85 °C Unit Min Typ[1] Max See Table 8 for measurement points. VOL and VOH are typical output voltage levels that occur with the output load. Fig 5. Input (An, Bn) to output (Bn, An) propagation delays and output transition times 001aah732 VM VM VM VM VI An, Bn input GND VOH Bn, An output VOL tPHL tPLH See Table 8 for measurement points. VOL and VOH are typical output voltage levels that occur with the output load. Fig 6. 3-state output enable and disable times 001aah733 outputs enabled outputs enabled outputs disabled VM VM VY VM VX VI GND 3.0 V VOL VOH GND output HIGH-to-OFF OFF-to-HIGH output LOW-to-OFF OFF-to-LOW tPZH tPHZ tPZL tPLZ OE input |
类似零件编号 - 74LVT245B |
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类似说明 - 74LVT245B |
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