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74LVT245DB Datenblatt(PDF) 6 Page - NXP Semiconductors |
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74LVT245DB Datenblatt(HTML) 6 Page - NXP Semiconductors |
6 / 15 page 74LVT245_3 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 03 — 8 May 2008 6 of 15 NXP Semiconductors 74LVT245 3.3 V octal transceiver with direction pin (3-state) [1] All typical values are measured at VCC = 3.3 V (unless stated otherwise) and Tamb =25 °C. [2] Unused pins at VCC or GND. [3] This parameter is valid for any VCC between 0 V and 1.2 V with a transition time of up to 10 ms. From VCC =1.2 VtoVCC = 3.3 V ± 0.3 V a transition time of 100 ms is permitted. This parameter is valid for Tamb = +25 °C only. [4] This is the bus hold overdrive current required to force the input to the opposite logic state. [5] This is the increase in supply current for each input at the specified voltage level other than VCC or GND. 10. Dynamic characteristics ICC supply current VCC = 3.6 V; VI =VCC or GND; IO =0A outputs HIGH - 0.13 0.19 mA outputs LOW - 3 12 mA outputs disabled - 0.13 0.19 mA ∆ICC additional supply current per input pin; VCC = 3.0 V to 3.6 V; one input = VCC − 0.6 V; other inputs at VCC or GND [5] - 0.1 0.2 mA CI input capacitance DIR and OE inputs; outputs disabled; VI = 0 V or 3.0 V -4 - pF CI/O input/output capacitance at input/output data pins, outputs disabled; VI/O = 0 V or 3.0 V -10 - pF Table 6. Static characteristics …continued At recommended operating conditions. Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions −40 °C to +85 °C Unit Min Typ[1] Max Table 7. Dynamic characteristics 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 tPLH LOW to HIGH propagation delay An to Bn or Bn to An VCC = 2.7 V - - 4.7 ns VCC = 3.3 V ± 0.3 V 1.0 2.4 4.0 ns tPHL HIGH to LOW propagation delay An to Bn or Bn to An VCC = 2.7 V - - 4.6 ns VCC = 3.3 V ± 0.3 V 1.0 2.4 4.0 ns tPZH OFF-state to HIGH propagation delay see Figure 6 VCC = 2.7 V - - 7.1 ns VCC = 3.3 V ± 0.3 V 1.1 3.3 5.5 ns tPZL OFF-state to LOW propagation delay see Figure 6 VCC = 2.7 V - - 6.5 ns VCC = 3.3 V ± 0.3 V 1.1 3.3 5.5 ns tPHZ HIGH to OFF-state propagation delay see Figure 6 VCC = 2.7 V - - 6.5 ns VCC = 3.3 V ± 0.3 V 2.2 3.6 5.9 ns |
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